// x.js

// X v3.10, Cross-Browser DHTML Library from Cross-Browser.com

// Copyright (c) 2002,2003 Michael Foster (mike@cross-browser.com)

// This library is distributed under the terms of the LGPL (gnu.org)



// Variables:

var xVersion='3.10',xOp7=false,xOp5or6=false,xIE4Up=false,xNN4=false,xUA=navigator.userAgent.toLowerCase();

if(window.opera){

  xOp7=(xUA.indexOf('opera 7')!=-1 || xUA.indexOf('opera/7')!=-1);

  if (!xOp7) xOp5or6=(xUA.indexOf('opera 5')!=-1 || xUA.indexOf('opera/5')!=-1 || xUA.indexOf('opera 6')!=-1 || xUA.indexOf('opera/6')!=-1);

}

else if(document.layers) xNN4=true;

else {xIE4Up=document.all && xUA.indexOf('msie')!=-1 && parseInt(navigator.appVersion)>=4;}



// Appearance:

function xShow(e) {

  if(!(e=xGetElementById(e))) return;

  if(e.style && xDef(e.style.visibility)) e.style.visibility='inherit';

  else if(xDef(e.visibility)) e.visibility='show';

}

function xHide(e) {

  if(!(e=xGetElementById(e))) return;

  if(e.style && xDef(e.style.visibility)) e.style.visibility='hidden';

  else if(xDef(e.visibility)) e.visibility='hide';

}

function xZIndex(e,uZ) {

  if(!(e=xGetElementById(e))) return 0;

  if(e.style && xDef(e.style.zIndex)) {

    if(arguments.length>1) e.style.zIndex=uZ;

    else uZ=e.style.zIndex;

  }

  else if(xDef(e.zIndex)) {

    if(arguments.length>1) e.zIndex=uZ;

    else uZ=e.zIndex;

  }

  return uZ;

}

function xColor(e,sColor) {

  if(!(e=xGetElementById(e))) return "";

  var c="";

  if(e.style && xDef(e.style.color)) {

    if(arguments.length>1) e.style.color=sColor;

    c=e.style.color;

  }

  return c;

}

function xBackground(e,sColor,sImage) {

  if(!(e=xGetElementById(e))) return "";

  var bg="";

  if(e.style) {

    if(arguments.length>1) e.style.backgroundColor=sColor;

    if(arguments.length==3) e.style.backgroundImage=(sImage && sImage!="")? "url("+sImage+")" : null;

    bg=e.style.backgroundColor;

  }

  else if(xDef(e.bgColor)) {

    if(arguments.length>1) e.bgColor=sColor;

    bg=e.bgColor;

    if(arguments.length==3) e.background.src=sImage;

  }

  return bg;

}



// Position:

function xMoveTo(e,iX,iY) {

  xLeft(e,iX);

  xTop(e,iY);

}

function xLeft(e,iX) {

  if(!(e=xGetElementById(e))) return 0;

  var css=xDef(e.style);

  if (css && xDef(e.style.left) && typeof(e.style.left)=="string") {

    if(arguments.length>1) e.style.left=iX+"px";

    else {

      iX=parseInt(e.style.left);

      if(isNaN(iX)) iX=0;

    }

  }

  else if(css && xDef(e.style.pixelLeft)) {

    if(arguments.length>1) e.style.pixelLeft=iX;

    else iX=e.style.pixelLeft;

  }

  else if(xDef(e.left)) {

    if(arguments.length>1) e.left=iX;

    else iX=e.left;

  }

  return iX;

}

function xTop(e,iY) {

  if(!(e=xGetElementById(e))) return 0;

  var css=xDef(e.style);

  if(css && xDef(e.style.top) && typeof(e.style.top)=="string") {

    if(arguments.length>1) e.style.top=iY+"px";

    else {

      iY=parseInt(e.style.top);

      if(isNaN(iY)) iY=0;

    }

  }

  else if(css && xDef(e.style.pixelTop)) {

    if(arguments.length>1) e.style.pixelTop=iY;

    else iY=e.style.pixelTop;

  }

  else if(xDef(e.top)) {

    if(arguments.length>1) e.top=iY;

    else iY=e.top;

  }

  return iY;

}

function xPageX(e) {

  if (!(e=xGetElementById(e))) return 0;

  if (xDef(e.pageX)) return e.pageX;

  var x = 0;

  while (e) {

    if (xDef(e.offsetLeft)) x += e.offsetLeft;

    e = xParent(e);

  }

  return x;

}

function xPageY(e) {

  if (!(e=xGetElementById(e))) return 0;

  if (xDef(e.pageY)) return e.pageY;

  var y = 0;

  while (e) {

    if (xDef(e.offsetTop)) y += e.offsetTop;

    e = xParent(e);

  }

  return y;

}

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

  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) xSlide(e);

}

function xSlide(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("xSlide('"+e.id+"')", e.timeout);

    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;

  }  

}



// Size:

function xResizeTo(e,uW,uH) {

  xWidth(e,uW);

  xHeight(e,uH);

}



function xWidth(e,uW) {

  if(!(e=xGetElementById(e)) || (uW && uW<0)) return 0;

  uW=Math.round(uW);

  var css=xDef(e.style);

  if(css && xDef(e.style.width,e.offsetWidth) && typeof(e.style.width)=="string") {

    if(arguments.length>1) xSetCW(e, uW);

    uW=e.offsetWidth;

  }

  else if(css && xDef(e.style.pixelWidth)) {

    if(arguments.length>1) e.style.pixelWidth=uW;

    uW=e.style.pixelWidth;

  }

  else if(xDef(e.clip) && xDef(e.clip.right)) {

    if(arguments.length>1) e.clip.right=uW;

    uW=e.clip.right;

  }

  return uW;

}

function xHeight(e,uH) {

  if(!(e=xGetElementById(e)) || (uH && uH<0)) return 0;

  uH=Math.round(uH);

  var css=xDef(e.style);

  if(css && xDef(e.style.height,e.offsetHeight) && typeof(e.style.height)=="string") {

    if(arguments.length>1) xSetCH(e, uH);

    uH=e.offsetHeight;

  }

  else if(css && xDef(e.style.pixelHeight)) {

    if(arguments.length>1) e.style.pixelHeight=uH;

    uH=e.style.pixelHeight;

  }

  else if(xDef(e.clip) && xDef(e.clip.bottom)) {

    if(arguments.length>1) e.clip.bottom=uH;

    uH=e.clip.bottom;

  }

  return uH;

}

// thank moz for the next 2000 bytes

function xGetCS(ele,sP){return parseInt(document.defaultView.getComputedStyle(ele,"").getPropertyValue(sP));}

function xSetCW(ele,uW){

  if(uW<0) return;

  var pl=0,pr=0,bl=0,br=0;

  if(xDef(document.defaultView) && xDef(document.defaultView.getComputedStyle)){

    pl=xGetCS(ele,"padding-left");

    pr=xGetCS(ele,"padding-right");

    bl=xGetCS(ele,"border-left-width");

    br=xGetCS(ele,"border-right-width");

  }

  else if(xDef(ele.currentStyle,document.compatMode)){

    if(document.compatMode=="CSS1Compat"){

      pl=parseInt(ele.currentStyle.paddingLeft);

      pr=parseInt(ele.currentStyle.paddingRight);

      bl=parseInt(ele.currentStyle.borderLeftWidth);

      br=parseInt(ele.currentStyle.borderRightWidth);

    }

  }

  else if(xDef(ele.offsetWidth,ele.style.width)){

    ele.style.width=uW+"px";

    pl=ele.offsetWidth-uW;

  }

  if(isNaN(pl)) pl=0; if(isNaN(pr)) pr=0; if(isNaN(bl)) bl=0; if(isNaN(br)) br=0;

  var cssW=uW-(pl+pr+bl+br);

  if(isNaN(cssW)||cssW<0) return;

  else ele.style.width=cssW+"px";

}

function xSetCH(ele,uH){

  if(uH<0) return;

  var pt=0,pb=0,bt=0,bb=0;

  if(xDef(document.defaultView) && xDef(document.defaultView.getComputedStyle)){

    pt=xGetCS(ele,"padding-top");

    pb=xGetCS(ele,"padding-bottom");

    bt=xGetCS(ele,"border-top-width");

    bb=xGetCS(ele,"border-bottom-width");

  }

  else if(xDef(ele.currentStyle,document.compatMode)){

    if(document.compatMode=="CSS1Compat"){

      pt=parseInt(ele.currentStyle.paddingTop);

      pb=parseInt(ele.currentStyle.paddingBottom);

      bt=parseInt(ele.currentStyle.borderTopWidth);

      bb=parseInt(ele.currentStyle.borderBottomWidth);

    }

  }

  else if(xDef(ele.offsetHeight,ele.style.height)){

    ele.style.height=uH+"px";

    pt=ele.offsetHeight-uH;

  }

  if(isNaN(pt)) pt=0; if(isNaN(pb)) pb=0; if(isNaN(bt)) bt=0; if(isNaN(bb)) bb=0;

  var cssH=uH-(pt+pb+bt+bb);

  if(isNaN(cssH)||cssH<0) return;

  else ele.style.height=cssH+"px";

}

function xClip(e,iTop,iRight,iBottom,iLeft) {

  if(!(e=xGetElementById(e))) return;

  if(e.style) {

    if (arguments.length == 5) e.style.clip="rect("+iTop+"px "+iRight+"px "+iBottom+"px "+iLeft+"px)";

    else e.style.clip="rect(0 "+parseInt(e.style.width)+"px "+parseInt(e.style.height)+"px 0)";

  }

  else if(e.clip) {

    if (arguments.length == 5) { e.clip.top=iTop; e.clip.right=iRight; e.clip.bottom=iBottom; e.clip.left=iLeft; }

    else { e.clip.top=0; e.clip.right=xWidth(e); e.clip.bottom=xHeight(e); e.clip.left=0; }

  }

}



// Event:

function xAddEventListener(e,eventType,eventListener,useCapture) {

  if(!(e=xGetElementById(e))) return;

  eventType=eventType.toLowerCase();

  if((!xIE4Up && !xOp7) && e==window) {

    if(eventType=='resize') { window.xPCW=xClientWidth(); window.xPCH=xClientHeight(); window.xREL=eventListener; xResizeEvent(); return; }

    if(eventType=='scroll') { window.xPSL=xScrollLeft(); window.xPST=xScrollTop(); window.xSEL=eventListener; xScrollEvent(); return; }

  }

  var eh="e.on"+eventType+"=eventListener";

  if(e.addEventListener) e.addEventListener(eventType,eventListener,useCapture);

  else if(e.attachEvent) e.attachEvent("on"+eventType,eventListener);

  else if(e.captureEvents) {

    if(useCapture||(eventType.indexOf('mousemove')!=-1)) { e.captureEvents(eval("Event."+eventType.toUpperCase())); }

    eval(eh);

  }

  else eval(eh);

}

function xRemoveEventListener(e,eventType,eventListener,useCapture) {

  if(!(e=xGetElementById(e))) return;

  eventType=eventType.toLowerCase();

  if((!xIE4Up && !xOp7) && e==window) {

    if(eventType=='resize') { window.xREL=null; return; }

    if(eventType=='scroll') { window.xSEL=null; return; }

  }

  var eh="e.on"+eventType+"=null";

  if(e.removeEventListener) e.removeEventListener(eventType,eventListener,useCapture);

  else if(e.detachEvent) e.detachEvent("on"+eventType,eventListener);

  else if(e.releaseEvents) {

    if(useCapture||(eventType.indexOf('mousemove')!=-1)) { e.releaseEvents(eval("Event."+eventType.toUpperCase())); }

    eval(eh);

  }

  else eval(eh);

}

function xEvent(evt) { // cross-browser event object prototype

  this.type = "";

  this.target = null;

  this.pageX = 0;

  this.pageY = 0;

  this.offsetX = 0;

  this.offsetY = 0;

  this.keyCode = 0;

  var e = evt ? evt : window.event;

  if(!e) return;

  // type

  if(e.type) this.type = e.type;

  // target

  if(xNN4) this.target = xLayerFromPoint(e.pageX, e.pageY);

  else if(e.target) this.target = e.target;

  else if(e.srcElement) this.target = e.srcElement;

  // pageX, pageY

  if(xOp5or6) { this.pageX = e.clientX; this.pageY = e.clientY; }

  else if(xDef(e.pageX,e.pageY)) { this.pageX = e.pageX; this.pageY = e.pageY; }

  else if(xDef(e.clientX,e.clientY)) { this.pageX = e.clientX + xScrollLeft(); this.pageY = e.clientY + xScrollTop(); }

  // offsetX, offsetY

  if(xDef(e.layerX,e.layerY)) { this.offsetX = e.layerX; this.offsetY = e.layerY; }

  else if(xDef(e.offsetX,e.offsetY)) { this.offsetX = e.offsetX; this.offsetY = e.offsetY; }

  else { this.offsetX = this.pageX - xPageX(this.target); this.offsetY = this.pageY - xPageY(this.target); }

  // keycode

  if (xDef(e.keyCode)) { this.keyCode = e.keyCode; }

  else if (xDef(e.which)) { this.keyCode = e.which; }

}

function xResizeEvent() { // window resize event simulation

  if (window.xREL) setTimeout("xResizeEvent()", 250);

  var cw = xClientWidth(), ch = xClientHeight();

  if (window.xPCW != cw || window.xPCH != ch) { window.xPCW = cw; window.xPCH = ch; if (window.xREL) window.xREL(); }

}

function xScrollEvent() { // window scroll event simulation

  if (window.xSEL) setTimeout("xScrollEvent()", 250);

  var sl = xScrollLeft(), st = xScrollTop();

  if (window.xPSL != sl || window.xPST != st) { window.xPSL = sl; window.xPST = st; if (window.xSEL) window.xSEL(); }

}



// Object:

function xGetElementById(e) {

  if(typeof(e)!="string") return e;

  if(document.getElementById) e=document.getElementById(e);

  else if(document.all) e=document.all[e];

  else if(document.layers) e=xLayer(e);

  else e=null;

  return e;

}

function xLayer(id,root) { // only for nn4

  var i,layer,found=null;

  if (!root) root=window;

  for(i=0; i<root.document.layers.length; i++) {

    layer=root.document.layers[i];

    if(layer.id==id) return layer;

    if(layer.document.layers.length) found=xLayer(id,layer);

    if(found) return found;

  }

  return null;

}

function xLayerFromPoint(x,y,root) { // only for nn4

  var i, hn=null, hz=-1, cn;

  if (!root) root = window;

  for (i=0; i < root.document.layers.length; ++i) {

    cn = root.document.layers[i];

    if (cn.visibility != "hide" && x >= cn.pageX && x <= cn.pageX + cn.clip.right && y >= cn.pageY && y <= cn.pageY + cn.clip.bottom ) {

      if (cn.zIndex > hz) { hz = cn.zIndex; hn = cn; }

    }

  }

  if (hn) {

    cn = xLayerFromPoint(x,y,hn);

    if (cn) hn = cn;

  }

  return hn;

}

function xParent(e){

  if (!(e=xGetElementById(e))) return null;

  var p=null;

  if (e.parentLayer){if (e.parentLayer!=window) p=e.parentLayer;}

  else{

    if (e.offsetParent) p=e.offsetParent;

    else if (e.parentNode) p=e.parentNode;

    else if (e.parentElement) p=e.parentElement;

  }

  return p;

}

function xDef() {

  for(var i=0; i<arguments.length; ++i){if(typeof(arguments[i])=="" || typeof(arguments[i])=="undefined") return false;}

  return true;

}



// Window:

function xScrollLeft() {

  var offset=0;

  if(xDef(window.pageXOffset)) offset=window.pageXOffset;

  else if(document.documentElement && document.documentElement.scrollLeft) offset=document.documentElement.scrollLeft;

  else if(document.body && xDef(document.body.scrollLeft)) offset=document.body.scrollLeft;

  return offset;

}

function xScrollTop() {

  var offset=0;

  if(xDef(window.pageYOffset)) offset=window.pageYOffset;

  else if(document.documentElement && document.documentElement.scrollTop) offset=document.documentElement.scrollTop;

  else if(document.body && xDef(document.body.scrollTop)) offset=document.body.scrollTop;

  return offset;

}

function xClientWidth() {

  var w=0;

  if(xOp5or6) w=window.innerWidth;

  else if(xIE4Up && document.documentElement && document.documentElement.clientWidth)

    w=document.documentElement.clientWidth;

  else if(document.body && document.body.clientWidth)

    w=document.body.clientWidth;

  else if(xDef(window.innerWidth,window.innerHeight,document.height)) {

    w=window.innerWidth;

    if(document.height>window.innerHeight) w-=16;

  }

  return w;

}

function xClientHeight() {

  var h=0;

  if(xOp5or6) h=window.innerHeight;

  else if(xIE4Up && document.documentElement && document.documentElement.clientHeight)

    h=document.documentElement.clientHeight;

  else if(document.body && document.body.clientHeight)

    h=document.body.clientHeight;

  else if(xDef(window.innerWidth,window.innerHeight,document.width)) {

    h=window.innerHeight;

    if(document.width>window.innerWidth) h-=16;

  }

  return h;

}



// end x.js