//PreReqs


// xGetElementById r2, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL


function xGetElementById(e)
{
  if(typeof(e)=='string') {
    if(document.getElementById) e=document.getElementById(e);
    else if(document.all) e=document.all[e];
    else e=null;
  }
  return e;
}


// xAddEventListener r8, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xAddEventListener(e,eT,eL,cap)
{
  if(!(e=xGetElementById(e)))return;
  eT=eT.toLowerCase();
  if(e.addEventListener)e.addEventListener(eT,eL,cap||false);
  else if(e.attachEvent)e.attachEvent('on'+eT,eL);
  else {
    var o=e['on'+eT];
    e['on'+eT]=typeof o=='function' ? function(v){o(v);eL(v);} : eL;
  }
}


// xRemoveEventListener r6, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xRemoveEventListener(e,eT,eL,cap)
{
  if(!(e=xGetElementById(e)))return;
  eT=eT.toLowerCase();
  if(e.removeEventListener)e.removeEventListener(eT,eL,cap||false);
  else if(e.detachEvent)e.detachEvent('on'+eT,eL);
  else e['on'+eT]=null;
}

// xHasPoint r2, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xHasPoint(e,x,y,t,r,b,l)
{
  if (!xNum(t)){t=r=b=l=0;}
  else if (!xNum(r)){r=b=l=t;}
  else if (!xNum(b)){l=r; b=t;}
  var eX = xPageX(e), eY = xPageY(e);
  return (x >= eX + l && x <= eX + xWidth(e) - r &&
          y >= eY + t && y <= eY + xHeight(e) - b );
}


// xEvent r11, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xEvent(evt) // object prototype
{
  var e = evt || window.event;
  if (!e) return;
  this.type = e.type;
  this.target = e.target || e.srcElement;
  this.relatedTarget = e.relatedTarget;
  /*@cc_on if (e.type == 'mouseover') this.relatedTarget = e.fromElement;
  else if (e.type == 'mouseout') this.relatedTarget = e.toElement; @*/
  if (xDef(e.pageX)) { this.pageX = e.pageX; this.pageY = e.pageY; }
  else if (xDef(e.clientX)) { this.pageX = e.clientX + xScrollLeft(); this.pageY = e.clientY + xScrollTop(); }
  if (xDef(e.offsetX)) { this.offsetX = e.offsetX; this.offsetY = e.offsetY; }
  else if (xDef(e.layerX)) { this.offsetX = e.layerX; this.offsetY = e.layerY; }
  else { this.offsetX = this.pageX - xPageX(this.target); this.offsetY = this.pageY - xPageY(this.target); }
  this.keyCode = e.keyCode || e.which || 0;
  this.shiftKey = e.shiftKey; this.ctrlKey = e.ctrlKey; this.altKey = e.altKey;
  if (typeof e.type == 'string') {
    if (e.type.indexOf('click') != -1) {this.button = 0;}
    else if (e.type.indexOf('mouse') != -1) {
      this.button = e.button;
      /*@cc_on if (e.button & 1) this.button = 0;
      else if (e.button & 4) this.button = 1;
      else if (e.button & 2) this.button = 2; @*/
    }
  }
}


// xBackground r4, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xBackground(e,c,i)
{
  if(!(e=xGetElementById(e))) return '';
  var bg='';
  if(e.style) {
    if(xStr(c)) {e.style.backgroundColor=c;}
    if(xStr(i)) {e.style.backgroundImage=(i!='')? 'url('+i+')' : null;}
    bg=e.style.backgroundColor;
  }
  return bg;
}



// xPageX r2, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xPageX(e)
{
	//alert("xPageX");
  var x = 0;
  e = xGetElementById(e);
  while (e) {
    if (xDef(e.offsetLeft)) x += e.offsetLeft;
    e = xDef(e.offsetParent) ? e.offsetParent : null;
  }
  return x;
}


// xPageY r4, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xPageY(e)
{
  var y = 0;
  e = xGetElementById(e);
  while (e) {
    if (xDef(e.offsetTop)) y += e.offsetTop;
    e = xDef(e.offsetParent) ? e.offsetParent : null;
  }
  return y;
}


// xPreventDefault r1, Copyright 2004-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xPreventDefault(e)
{
  if (e && e.preventDefault) e.preventDefault();
  else if (window.event) window.event.returnValue = false;
}

// xRgbToHex r1, Copyright 2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xRgbToHex(r, g, b)
{
  return xHex((r << 16) | (g << 8) | b, 6, '#');
}

// xHex r1, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xHex(n, digits, prefix)
{
  var p = '', n = Math.ceil(n);
  if (prefix) p = prefix;
  n = n.toString(16);
  for (var i=0; i < digits - n.length; ++i) {
    p += '0';
  }
  return p + n;
}


// xParseColor r1, Copyright 2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xParseColor(c)
{
  var o = {};
  if (xStr(c)) {
    if (c.indexOf('rgb')!=-1) {
      var a = c.match(/(\d*)\s*,\s*(\d*)\s*,\s*(\d*)/);
      o.r = parseInt(a[1]) || 0;
      o.g = parseInt(a[2]) || 0;
      o.b = parseInt(a[3]) || 0;
      o.n = (o.r << 16) | (o.g << 8) | o.b;
    }
    else {
      pn(parseInt(c.substr(1), 16));
    }
  }
  else {
    pn(c);
  }
  o.s = xHex(o.n, 6, '#');
  return o;
  function pn(n) { // parse num
    o.n = n || 0;
    o.r = (o.n & 0xFF0000) >> 16;
    o.g = (o.n & 0xFF00) >> 8;
    o.b = o.n & 0xFF;
  }
}


// xDef r1, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xDef()
{
  for(var i=0; i<arguments.length; ++i){if(typeof(arguments[i])=='undefined') return false;}
  return true;
}
// xStr r1, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xStr(s)
{
  for(var i=0; i<arguments.length; ++i){if(typeof(arguments[i])!='string') return false;}
  return true;
}

function xNum()
{
  for(var i=0; i<arguments.length; ++i){if(isNaN(arguments[i]) || typeof(arguments[i])!='number') return false;}
  return true;
}

// xStyle r1, Copyright 2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xStyle(sProp, sVal)
{
  var i, e;
  for (i = 2; i < arguments.length; ++i) {
    e = xGetElementById(arguments[i]);
    if (e.style) {
      try { e.style[sProp] = sVal; }
      catch (err) { e.style[sProp] = ''; } // ???
    }
  }
}


function xGetComputedStyle(e, p, i)
{
  if(!(e=xGetElementById(e))) return null;
  var s, v = 'undefined', dv = document.defaultView;
  if(dv && dv.getComputedStyle){
    s = dv.getComputedStyle(e,'');
    if (s) v = s.getPropertyValue(p);
  }
  else if(e.currentStyle) {
    v = e.currentStyle[xCamelize(p)];
  }
  else return null;
  return i ? (parseInt(v) || 0) : v;
}

function xWidth(e,w)
{
  if(!(e=xGetElementById(e))) return 0;
  if (xNum(w)) {
    if (w<0) w = 0;
    else w=Math.round(w);
  }
  else w=-1;
  var css=xDef(e.style);
  if (e == document || e.tagName.toLowerCase() == 'html' || e.tagName.toLowerCase() == 'body') {
    w = xClientWidth();
  }
  else if(css && xDef(e.offsetWidth) && xStr(e.style.width)) {
    if(w>=0) {
      var pl=0,pr=0,bl=0,br=0;
      if (document.compatMode=='CSS1Compat') {
        var gcs = xGetComputedStyle;
        pl=gcs(e,'padding-left',1);
        if (pl !== null) {
          pr=gcs(e,'padding-right',1);
          bl=gcs(e,'border-left-width',1);
          br=gcs(e,'border-right-width',1);
        }
        // Should we try this as a last resort?
        // At this point getComputedStyle and currentStyle do not exist.
        else if(xDef(e.offsetWidth,e.style.width)){
          e.style.width=w+'px';
          pl=e.offsetWidth-w;
        }
      }
      w-=(pl+pr+bl+br);
      if(isNaN(w)||w<0) return;
      else e.style.width=w+'px';
    }
    w=e.offsetWidth;
  }
  else if(css && xDef(e.style.pixelWidth)) {
    if(w>=0) e.style.pixelWidth=w;
    w=e.style.pixelWidth;
  }
  return w;
}

// xHeight r6, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xHeight(e,h)
{
  if(!(e=xGetElementById(e))) return 0;
  if (xNum(h)) {
    if (h<0) h = 0;
    else h=Math.round(h);
  }
  else h=-1;
  var css=xDef(e.style);
  if (e == document || e.tagName.toLowerCase() == 'html' || e.tagName.toLowerCase() == 'body') {
    h = xClientHeight();
  }
  else if(css && xDef(e.offsetHeight) && xStr(e.style.height)) {
    if(h>=0) {
      var pt=0,pb=0,bt=0,bb=0;
      if (document.compatMode=='CSS1Compat') {
        var gcs = xGetComputedStyle;
        pt=gcs(e,'padding-top',1);
        if (pt !== null) {
          pb=gcs(e,'padding-bottom',1);
          bt=gcs(e,'border-top-width',1);
          bb=gcs(e,'border-bottom-width',1);
        }
        // Should we try this as a last resort?
        // At this point getComputedStyle and currentStyle do not exist.
        else if(xDef(e.offsetHeight,e.style.height)){
          e.style.height=h+'px';
          pt=e.offsetHeight-h;
        }
      }
      h-=(pt+pb+bt+bb);
      if(isNaN(h)||h<0) return;
      else e.style.height=h+'px';
    }
    h=e.offsetHeight;
  }
  else if(css && xDef(e.style.pixelHeight)) {
    if(h>=0) e.style.pixelHeight=h;
    h=e.style.pixelHeight;
  }
  return h;
}

// xTop r2, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xTop(e, iY)
{
  if(!(e=xGetElementById(e))) return 0;
  var css=xDef(e.style);
  if(css && xStr(e.style.top)) {
    if(xNum(iY)) e.style.top=iY+'px';
    else {
      iY=parseInt(e.style.top);
      if(isNaN(iY)) iY=xGetComputedStyle(e,'top',1);
      if(isNaN(iY)) iY=0;
    }
  }
  else if(css && xDef(e.style.pixelTop)) {
    if(xNum(iY)) e.style.pixelTop=iY;
    else iY=e.style.pixelTop;
  }
  return iY;
}

// xLeft r2, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xLeft(e, iX)
{
  if(!(e=xGetElementById(e))) return 0;
  var css=xDef(e.style);
  if (css && xStr(e.style.left)) {
    if(xNum(iX)) e.style.left=iX+'px';
    else {
      iX=parseInt(e.style.left);
      if(isNaN(iX)) iX=xGetComputedStyle(e,'left',1);
      if(isNaN(iX)) iX=0;
    }
  }
  else if(css && xDef(e.style.pixelLeft)) {
    if(xNum(iX)) e.style.pixelLeft=iX;
    else iX=e.style.pixelLeft;
  }
  return iX;
}

// xCamelize r1, Copyright 2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xCamelize(cssPropStr)
{
  var i, c, a = cssPropStr.split('-');
  var s = a[0];
  for (i=1; i<a.length; ++i) {
    c = a[i].charAt(0);
    s += a[i].replace(c, c.toUpperCase());
  }
  return s;
}

// xMoveTo r1, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xMoveTo(e,x,y)
{
  xLeft(e,x);
  xTop(e,y);
}

// xWinScrollTo r3, Copyright 2003-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

var xWinScrollWin = null;
function xWinScrollTo(win,x,y,uTime) {
  var e = win;
  if (!e.timeout) e.timeout = 25;
  var st = xScrollTop(e, 1);
  var sl = xScrollLeft(e, 1);
  e.xTarget = x; e.yTarget = y; e.slideTime = uTime; e.stop = false;
  e.yA = e.yTarget - st;
  e.xA = e.xTarget - sl; // A = distance
  if (e.slideLinear) e.B = 1/e.slideTime;
  else e.B = Math.PI / (2 * e.slideTime); // B = period
  e.yD = st;
  e.xD = sl; // D = initial position
  var d = new Date(); e.C = d.getTime();
  if (!e.moving) {
    xWinScrollWin = e;
    _xWinScrollTo();
  }
}
function _xWinScrollTo() {
  var e = xWinScrollWin || window;
  var now, s, t, newY, newX;
  now = new Date();
  t = now.getTime() - e.C;
  if (e.stop) { e.moving = false; }
  else if (t < e.slideTime) {
    setTimeout("_xWinScrollTo()", e.timeout);

    s = e.B * t;
    if (!e.slideLinear) s = Math.sin(s);
//    if (e.slideLinear) s = e.B * t;
//    else s = Math.sin(e.B * t);

    newX = Math.round(e.xA * s + e.xD);
    newY = Math.round(e.yA * s + e.yD);
    e.scrollTo(newX, newY);
    e.moving = true;
  }  
  else {
    e.scrollTo(e.xTarget, e.yTarget);
    xWinScrollWin = null;
    e.moving = false;
    if (e.onslideend) e.onslideend();
  }  
}



// xClientHeight r5, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xClientHeight()
{
  var v=0,d=document,w=window;
  if((!d.compatMode || d.compatMode == 'CSS1Compat') && !w.opera && d.documentElement && d.documentElement.clientHeight)
    {v=d.documentElement.clientHeight;}
  else if(d.body && d.body.clientHeight)
    {v=d.body.clientHeight;}
  else if(xDef(w.innerWidth,w.innerHeight,d.width)) {
    v=w.innerHeight;
    if(d.width>w.innerWidth) v-=16;
  }
  return v;
}

// xDocSize r1, Copyright 2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xDocSize()
{
  var b=document.body, e=document.documentElement;
  var esw=0, eow=0, bsw=0, bow=0, esh=0, eoh=0, bsh=0, boh=0;
  if (e) {
    esw = e.scrollWidth;
    eow = e.offsetWidth;
    esh = e.scrollHeight;
    eoh = e.offsetHeight;
  }
  if (b) {
    bsw = b.scrollWidth;
    bow = b.offsetWidth;
    bsh = b.scrollHeight;
    boh = b.offsetHeight;
  }
//  alert('compatMode: ' + document.compatMode + '\n\ndocumentElement.scrollHeight: ' + esh + '\ndocumentElement.offsetHeight: ' + eoh + '\nbody.scrollHeight: ' + bsh + '\nbody.offsetHeight: ' + boh + '\n\ndocumentElement.scrollWidth: ' + esw + '\ndocumentElement.offsetWidth: ' + eow + '\nbody.scrollWidth: ' + bsw + '\nbody.offsetWidth: ' + bow);
  return {w:Math.max(esw,eow,bsw,bow),h:Math.max(esh,eoh,bsh,boh)};
}


//Base Objects

// xOpacity r1, Copyright 2006-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL
/*

Set or get the opacity of an element.

Syntax

xOpacity(e[, o])

Parameters
eElement object or ID string.
oOpacity value: 0.0 - 1.0 (0 = transparent)

Return
On success returns current opacity: 0.0 - 1.0. On error returns a value greater than 1.

*/

function xOpacity(e, o)
{
  var set = xDef(o);
  //  if (set && o == 1) o = .9999; // FF1.0.2 but not needed in 1.5
  if(!(e=xGetElementById(e))) return 2; // error
  if (xStr(e.style.opacity)) { // CSS3
    if (set) e.style.opacity = o + '';
    else o = parseFloat(e.style.opacity);
  }
  else if (xStr(e.style.filter)) { // IE5.5+
    if (set) e.style.filter = 'alpha(opacity=' + (100 * o) + ')';
    else if (e.filters && e.filters.alpha) { o = e.filters.alpha.opacity / 100; }
  }
  else if (xStr(e.style.MozOpacity)) { // Gecko before CSS3 support
    if (set) e.style.MozOpacity = o + '';
    else o = parseFloat(e.style.MozOpacity);
  }
  else if (xStr(e.style.KhtmlOpacity)) { // Konquerer and Safari
    if (set) e.style.KhtmlOpacity = o + '';
    else o = parseFloat(e.style.KhtmlOpacity);
  }
  return isNaN(o) ? 1 : o; // if NaN, should this return an error instead of 1?
}


// xAnimation r3, Copyright 2006-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xAnimation(r)
{
  this.res = r||10;
}
xAnimation.prototype.init = function(e,t,or,ot,oe,a,b)
{
  var i = this;
  i.e = xGetElementById(e);
  i.t = t;
  i.or=or; i.ot=ot; i.oe=oe;
  i.a = a||0;
  i.v = xAnimation.vf[i.a];
  i.qc = 1 + (b||0);
  i.fq = 1/i.t;
  if (i.a) {
    i.fq *= i.qc * Math.PI;
    if (i.a == 1 || i.a == 2) { i.fq /= 2; }
  }
  else { i.qc = 1; }
  i.xd=i.x2-i.x1; i.yd=i.y2-i.y1; i.zd=i.z2-i.z1;
};
xAnimation.prototype.run = function(r)
{
  var i = this;
  if (!r) i.t1 = new Date().getTime();
  if (!i.tmr) i.tmr = setInterval(
    function() {
      i.et = new Date().getTime() - i.t1;
      if (i.et < i.t) {
        i.f = i.v(i.et*i.fq);
        i.x=i.xd*i.f+i.x1; i.y=i.yd*i.f+i.y1; i.z=i.zd*i.f+i.z1;
        i.or(i);
      }
      else {
        clearInterval(i.tmr); i.tmr = null;
        if (i.qc%2) {i.x=i.x2; i.y=i.y2; i.z=i.z2;}
        else {i.x=i.x1; i.y=i.y1; i.z=i.z1;}
        i.ot(i);
        var rep = false;
        if (typeof i.oe == 'function') rep = i.oe(i);
        else if (typeof i.oe == 'string') rep = eval(i.oe);
        if (rep) i.resume(1);
      }
    }, i.res
  );
};
xAnimation.vf = [
  function(r){return r;},
  function(r){return Math.abs(Math.sin(r));},
  function(r){return 1-Math.abs(Math.cos(r));},
  function(r){return (1-Math.cos(r))/2;}
];
xAnimation.prototype.pause = function()
{
  clearInterval(this.tmr);
  this.tmr = null;
};
xAnimation.prototype.resume = function(fs)
{
  if (typeof this.tmr != 'undefined' && !this.tmr) {
    this.t1 = new Date().getTime();
    if (!fs) {this.t1 -= this.et;}
    this.run(!fs);
  }
};
xAnimation.prototype.opacity = function(e,o,t,a,b,oe)
{
  var i = this;
  i.x1 = xOpacity(e); i.x2 = o; // start and target opacity
  i.init(e,t,h,h,oe,a,b);
  i.run();
  function h(i) {xOpacity(i.e, i.x);} // onRun and onTarget
};




//Additions

// xAnimation.opacity r2, Copyright 2006-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL



xAnimation.prototype.size = function(e,w,h,t,a,b,oe)
{
  var i = this;
  i.x1 = xWidth(e); i.y1 = xHeight(e); // start size
  i.x2 = Math.round(w); i.y2 = Math.round(h); // target size
  i.init(e,t,o,o,oe,a,b);
  i.run();
  function o(i) { xWidth(i.e, Math.round(i.x)); xHeight(i.e, Math.round(i.y)); } // onRun and onTarget
};


// xAnimation.css r2, Copyright 2006-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

xAnimation.prototype.css = function(e,p,v,t,a,b,oe)
{
  var i = this;
  i.x1 = xGetComputedStyle(e,p,true); // start value
  i.x2 = v; // target value
  i.prop = xCamelize(p);
  i.init(e,t,h,h,oe,a,b);
  i.run();
  function h(i) {i.e.style[i.prop] = Math.round(i.x) + 'px';}
};

// xAnimation.rgb r2, Copyright 2006-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

xAnimation.prototype.rgb = function(e,p,v,t,a,b,oe)
{
  var i = this;
  var co = xParseColor(xGetComputedStyle(e,p));
  i.x1 = co.r; i.y1 = co.g; i.z1 = co.b; // start colors
  co = xParseColor(v);
  i.x2 = co.r; i.y2 = co.g; i.z2 = co.b; // target colors
  i.prop = xCamelize(p);
  i.init(e,t,h,h,oe,a,b);
  i.run();
  function h(i) { // onRun and onTarget
    i.e.style[i.prop] = xRgbToHex(Math.round(i.x),Math.round(i.y),Math.round(i.z));
  }
};


// xSlideTo r3, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xSlideTo(e, x, y, uTime)
{
  if (!(e=xGetElementById(e))) return;
  if (!e.timeout) e.timeout = 25;
  e.xTarget = x; e.yTarget = y; e.slideTime = uTime; e.stop = false;
  e.yA = e.yTarget - xTop(e); e.xA = e.xTarget - xLeft(e); // A = distance
  if (e.slideLinear) e.B = 1/e.slideTime;
  else e.B = Math.PI / (2 * e.slideTime); // B = period
  e.yD = xTop(e); e.xD = xLeft(e); // D = initial position
  var d = new Date(); e.C = d.getTime();
  if (!e.moving) _xSlideTo(e);
}
function _xSlideTo(e)
{
  if (!(e=xGetElementById(e))) return;
  var now, s, t, newY, newX;
  now = new Date();
  t = now.getTime() - e.C;
  if (e.stop) { e.moving = false; }
  else if (t < e.slideTime) {
    setTimeout("_xSlideTo('"+e.id+"')", e.timeout);

    s = e.B * t;
    if (!e.slideLinear) s = Math.sin(s);
//    if (e.slideLinear) s = e.B * t;
//    else s = Math.sin(e.B * t);

    newX = Math.round(e.xA * s + e.xD);
    newY = Math.round(e.yA * s + e.yD);
    xMoveTo(e, newX, newY);
    e.moving = true;
  }  
  else {
    xMoveTo(e, e.xTarget, e.yTarget);
    e.moving = false;
    if (e.onslideend) e.onslideend();
  }  
}

// xAniOpacity r1, Copyright 2006-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL
/*

Animate an element's opacity.

Syntax

xAniOpacity(e, o, t[, a[, oe]]);

Parameters
e	An Element object reference or an id string.
o	The target opacity (0 <= o <= 1).
t	The total time for the animation, in milliseconds.
a	Acceleration type: 0=none, 1=sine(fast start, slow at end), 2=cosine(slow start, fast at end). This is optional, the default is 0.
o	eThe onEnd handler. It can be a function reference or a string. It will be executed at the completion of the animation. This is optional.

*/

function xAniOpacity(e, o, t, a, oe)
{
  if (!(e=xGetElementById(e))) return;
  var o0 = xOpacity(e); // start value
  var dx = o - o0; // displacement
  var fq = 1 / t; // frequency
  if (a) fq *= (Math.PI / 2);
  var t0 = new Date().getTime(); // start time
  var tmr = setInterval(
    function() {
      var et = new Date().getTime() - t0; // elapsed time
      if (et < t) {
        var f = et * fq; // constant velocity
        if (a == 1) f = Math.sin(f); // sine acceleration
        else if (a == 2) f = 1 - Math.cos(f); // cosine acceleration
        f = Math.abs(f);
        xOpacity(e, f * dx + o0); // instantaneous value
      }
      else {
        clearInterval(tmr);
        xOpacity(e, o); // target value
        if (typeof oe == 'function') oe(); // 'onEnd' handler
        else if (typeof oe == 'string') eval(oe);
      }
    }, 10 // timer resolution
  );
}

// xScrollTop r3, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xScrollTop(e, bWin)
{
  var offset=0;
  if (!xDef(e) || bWin || e == document || e.tagName.toLowerCase() == 'html' || e.tagName.toLowerCase() == 'body') {
    var w = window;
    if (bWin && e) w = e;
    if(w.document.documentElement && w.document.documentElement.scrollTop) offset=w.document.documentElement.scrollTop;
    else if(w.document.body && xDef(w.document.body.scrollTop)) offset=w.document.body.scrollTop;
  }
  else {
    e = xGetElementById(e);
    if (e && xNum(e.scrollTop)) offset = e.scrollTop;
  }
  return offset;
}

// xScrollLeft r3, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xScrollLeft(e, bWin)
{
  var offset=0;
  if (!xDef(e) || bWin || e == document || e.tagName.toLowerCase() == 'html' || e.tagName.toLowerCase() == 'body') {
    var w = window;
    if (bWin && e) w = e;
    if(w.document.documentElement && w.document.documentElement.scrollLeft) offset=w.document.documentElement.scrollLeft;
    else if(w.document.body && xDef(w.document.body.scrollLeft)) offset=w.document.body.scrollLeft;
  }
  else {
    e = xGetElementById(e);
    if (e && xNum(e.scrollLeft)) offset = e.scrollLeft;
  }
  return offset;
}



//Window ControlS

// xWinScrollTo r3, Copyright 2003-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

var xWinScrollWin = null;
function xWinScrollTo(win,x,y,uTime) {
  var e = win;
  if (!e.timeout) e.timeout = 25;
  var st = xScrollTop(e, 1);
  var sl = xScrollLeft(e, 1);
  e.xTarget = x; e.yTarget = y; e.slideTime = uTime; e.stop = false;
  e.yA = e.yTarget - st;
  e.xA = e.xTarget - sl; // A = distance
  if (e.slideLinear) e.B = 1/e.slideTime;
  else e.B = Math.PI / (2 * e.slideTime); // B = period
  e.yD = st;
  e.xD = sl; // D = initial position
  var d = new Date(); e.C = d.getTime();
  if (!e.moving) {
    xWinScrollWin = e;
    _xWinScrollTo();
  }
}
function _xWinScrollTo() {
  var e = xWinScrollWin || window;
  var now, s, t, newY, newX;
  now = new Date();
  t = now.getTime() - e.C;
  if (e.stop) { e.moving = false; }
  else if (t < e.slideTime) {
    setTimeout("_xWinScrollTo()", e.timeout);

    s = e.B * t;
    if (!e.slideLinear) s = Math.sin(s);
//    if (e.slideLinear) s = e.B * t;
//    else s = Math.sin(e.B * t);

    newX = Math.round(e.xA * s + e.xD);
    newY = Math.round(e.yA * s + e.yD);
    e.scrollTo(newX, newY);
    e.moving = true;
  }  
  else {
    e.scrollTo(e.xTarget, e.yTarget);
    xWinScrollWin = null;
    e.moving = false;
    if (e.onslideend) e.onslideend();
  }  
}




// xTriStateImage r4, Copyright 2004-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xTriStateImage(idOut, urlOver, urlDown, fnUp) // Object Prototype
{
  var img;
  // Downgrade Detection
  if (typeof Image != 'undefined' && document.getElementById) {
    img = document.getElementById(idOut);
    if (img) {
      // Constructor Code
      var urlOut = img.src;
      var i = new Image();
      i.src = urlOver;
      i = new Image();
      i.src = urlDown;
      // Event Listeners (closure)
      img.onmouseover = function() { this.src = urlOver; };
      img.onmouseout = function() { this.src = urlOut; };
      img.onmousedown = function() { this.src = urlDown; };
      img.onmouseup = function()
      {
        this.src = urlOver;
        if (fnUp) {
          fnUp();
        }
      };
    }
  }
  // Destructor Method
  this.onunload = function()
  {
    if (!window.opera && img) { // Remove any circular references for IE
      img.onmouseover = img.onmouseout = img.onmousedown = null;
      img = null;
    }
  };    
}


// xEnableDrag r8, Copyright 2002-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xEnableDrag(id,fS,fD,fE)
{
  var mx = 0, my = 0, el = xGetElementById(id);
  if (el) {
    el.xDragEnabled = true;
    xAddEventListener(el, 'mousedown', dragStart, false);
  }
  // Private Functions
  function dragStart(e)
  {
    if (el.xDragEnabled) {
      var ev = new xEvent(e);
      xPreventDefault(e);
      mx = ev.pageX;
      my = ev.pageY;
      xAddEventListener(document, 'mousemove', drag, false);
      xAddEventListener(document, 'mouseup', dragEnd, false);
      if (fS) {
        fS(el, ev.pageX, ev.pageY, ev);
      }
    }
  }
  function drag(e)
  {
    var ev, dx, dy;
    xPreventDefault(e);
    ev = new xEvent(e);
    dx = ev.pageX - mx;
    dy = ev.pageY - my;
    mx = ev.pageX;
    my = ev.pageY;
    if (fD) {
      fD(el, dx, dy, ev);
    }
    else {
      xMoveTo(el, xLeft(el) + dx, xTop(el) + dy);
    }
  }
  function dragEnd(e)
  {
    var ev = new xEvent(e);
    xPreventDefault(e);
    xRemoveEventListener(document, 'mouseup', dragEnd, false);
    xRemoveEventListener(document, 'mousemove', drag, false);
    if (fE) {
      fE(el, ev.pageX, ev.pageY, ev);
    }
    if (xEnableDrag.drop) {
      xEnableDrag.drop(el, ev);
    }
  }
}

xEnableDrag.drops = []; // static property


// xEnableDrag2 r1, Copyright 2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xEnableDrag2(id,fS,fD,fE,x1,y1,x2,y2)
{
  var b = null; // boundary element
  if (typeof x1 != 'undefined' && !x2) {
    b = xGetElementById(x1);
  }
  xEnableDrag(id,
    function (el, x, y, ev) { // dragStart
      if (b) { // get rect from current size of ele
        x1 = xPageX(b);
        y1 = xPageY(b);
        x2 = x1 + b.offsetWidth;
        y2 = y1 + b.offsetHeight;
      }
      if (fS) fS(el, x, y, ev);
    },
    function (el, dx, dy, ev) { // drag
      var x = xPageX(el) + dx; // absolute coords of target
      var y = xPageY(el) + dy;
      var mx = ev.pageX; // absolute coords of mouse
      var my = ev.pageY;
      if  (!(x < x1 || x + el.offsetWidth > x2) && !(mx < x1 || mx > x2)) {
        el.style.left = (el.offsetLeft + dx) + 'px';
      }
      if (!(y < y1 || y + el.offsetHeight > y2) && !(my < y1 || my > y2)) {
        el.style.top = (el.offsetTop + dy) + 'px';
      }
      if (fD) fD(el, dx, dy, ev);
    },
    function (el, x, y, ev) { // dragEnd
      if (fE) fE(el, x, y, ev);
    }
  );
}




// xDisableDrag r3, Copyright 2005-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xDisableDrag(id)
{
  xGetElementById(id).xDragEnabled = false;
}



// xEnableDrop r3, Copyright 2006-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xEnableDrop(id, f)
{
  var e = xGetElementById(id);
  if (e) {
    e.xDropEnabled = true;
    xEnableDrag.drops[xEnableDrag.drops.length] = {e:e, f:f};
  }
}

xEnableDrag.drop = function (el, ev) // static method
{
  var i, z, hz = 0, d = null, da = xEnableDrag.drops;
  for (i = 0; i < da.length; ++i) {
    if (da[i] && da[i].e.xDropEnabled && xHasPoint(da[i].e, ev.pageX, ev.pageY)) {
      z = parseInt(da[i].e.style.zIndex) || 0;
      if (z >= hz) {
        hz = z;
        d = da[i];
      } 
    }
  }
  if (d) {
    d.f(d.e, el, ev.pageX, ev.pageY); // drop event
  }
}


// xDisableDrop r2, Copyright 2006-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xDisableDrop(id)
{
  xGetElementById(id).xDropEnabled = false;
}