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 e=null;
  return e;
}

function xImgRollSetup(p,s,x)
{
  var ele, id;
  for (var i=3; i<arguments.length; ++i) {
    id = arguments[i];
    if (ele = xGetElementById(id)) {
      ele.xIOU = p + id + x;
      ele.xIOO = new Image();
      ele.xIOO.src = p + id + s + x;
      ele.onmouseout = imgOnMouseout;
      ele.onmouseover = imgOnMouseover;
    }
  }
  function imgOnMouseout(e)
  {
    if (this.xIOU) {
      this.src = this.xIOU;
    }
  }
  function imgOnMouseover(e)
  {
    if (this.xIOO && this.xIOO.complete) {
      this.src = this.xIOO.src;
    }
  }
}

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

function xDef()
{
  for(var i=0; i<arguments.length; ++i){if(typeof(arguments[i])=='undefined') 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;
}
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=0;
    }
  }
  else if(css && xDef(e.style.pixelLeft)) {
    if(xNum(iX)) e.style.pixelLeft=iX;
    else iX=e.style.pixelLeft;
  }
  return iX;
}

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=0;
    }
  }
  else if(css && xDef(e.style.pixelTop)) {
    if(xNum(iY)) e.style.pixelTop=iY;
    else iY=e.style.pixelTop;
  }
  return iY;
}

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

function xOffsetLeft(e)
{
  if (!(e=xGetElementById(e))) return 0;
  if (xDef(e.offsetLeft)) return e.offsetLeft;
  else return 0;
}

function xOffsetTop(e)
{
  if (!(e=xGetElementById(e))) return 0;
  if (xDef(e.offsetTop)) return e.offsetTop;
  else return 0;
}


function xParent(e, bNode)
{
  if (!(e=xGetElementById(e))) return null;
  var p=null;
  if (!bNode && xDef(e.offsetParent)) p=e.offsetParent;
  else if (xDef(e.parentNode)) p=e.parentNode;
  else if (xDef(e.parentElement)) p=e.parentElement;
  return p;
}

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;
}

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;
}

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+
    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?
}

function xDisplay(e,s)
{
  if(!(e=xGetElementById(e))) return null;
  if(e.style && xDef(e.style.display)) {
    if (xStr(s)) e.style.display = s;
    return e.style.display;
  }
  return null;
}

function xZIndex(e,uZ)
{
  if(!(e=xGetElementById(e))) return 0;
  if(e.style && xDef(e.style.zIndex)) {
    if(xNum(uZ)) e.style.zIndex=uZ;
    uZ=parseInt(e.style.zIndex);
  }
  return uZ;
}

function xWindow(name, w, h, x, y, loc, men, res, scr, sta, too)
{
  var e='',c=',',xf='left=',yf='top='; this.n = name;
  if (document.layers) {xf='screenX='; yf='screenY=';}
  this.f = (w?'width='+w+c:e)+(h?'height='+h+c:e)+(x>=0?xf+x+c:e)+
    (y>=0?yf+y+c:e)+'location='+loc+',menubar='+men+',resizable='+res+
    ',scrollbars='+scr+',status='+sta+',toolbar='+too;
  this.opened = function() {return this.w && !this.w.closed;};
  this.close = function() {if(this.opened()) this.w.close();};
  this.focus = function() {if(this.opened()) this.w.focus();};
  this.load = function(sUrl) {
    if (this.opened()) this.w.location.href = sUrl;
    else this.w = window.open(sUrl,this.n,this.f);
    this.focus();
    return false;
  };
}