/* xbdhtml.js (Cross-Browser Nav4/Gecko/IE DHTML API) 
   14 May 98, Eric Krock, Copyright Netscape Communications
   Permission is granted to reuse, redistribute, and modify 
   without charge.
	
   Updated 18 July 2000 by Vladimir Ermakov, Netscape Communications,
   and Marcell Ortutay, Plugged in Enterprises..

   Updated 15 of February 2001 by Vladimir Ermakov, Netscape Communications:

   Updated October 02, 2001 by Bob Clary, Netscape Communications
*/

// simplified version of JavaScript Client Sniffer code http://www.mozilla.org/docs/web-developer/sniffer/browser_type.html

function Is ()
{   
    var agt=navigator.userAgent.toLowerCase()

    this.major = stringToNumber(navigator.appVersion)
    this.minor = parseFloat(navigator.appVersion)

    this.nav  = ((agt.indexOf('mozilla')!=-1) && ((agt.indexOf('spoofer')==-1)
                && (agt.indexOf('compatible') == -1)))
    this.nav2 = (this.nav && (this.major == 2))
    this.nav3 = (this.nav && (this.major == 3))
    this.nav4 = (this.nav && (this.major == 4))
	
	this.nav5 =	(this.nav && (this.major == 5))
	this.nav6 = (this.nav && (this.major == 5))
	this.gecko = (this.nav && (this.major >= 5))

    this.ie   = (agt.indexOf("msie") != -1)
    this.ie3  = (this.ie && (this.major == 2))
    this.ie4  = (this.ie && (this.major == 3))
    this.ie5  = (this.ie && (this.major == 4))


    this.opera = (agt.indexOf("opera") != -1)
     
    this.nav4up = this.nav && (this.major >= 4)
    this.ie4up  = this.ie  && (this.major >= 4)
}


var is = new Is();


function dw(str, minVersion, maxVersion)
{   if ( ((dw.arguments.length < 3) || (is.major <= maxVersion)) 
         && ((dw.arguments.length < 2) || (is.major >= minVersion)))
    document.write(str)  
}


function dwb (str, aBoolean)
{   if  ((dwb.arguments.length < 2) || aBoolean)
    document.write(str)  
}


function sv(str, minVersion, maxVersion)
{   if ( ((sv.arguments.length < 3) || (is.major <= maxVersion)) 
         && ((sv.arguments.length < 2) || (is.major >= minVersion)))
    return str;
    else return "";
}


function sb (str, aBoolean)
{   if  ((sb.arguments.length < 2) || aBoolean)
    return str;
    else return "";
}


function layerClipOrder (cssClipString)
{  var commaPos = cssClipString.lastIndexOf(",");
   return (cssClipString.substring(commaPos+1) + "," + cssClipString.substring(0,commaPos));
}

function genElt (name, content, left, top, z, width, height, visibility, 
                 backgroundColor, backgroundImage, clip, relative, 
                 hideEltOnOlderBrowsers, useDivInsteadOfLayer, classname) 
{ var markup = "";
  if (is.gecko)
  {
    markup = '<DIV ID="' + name + '"' +  
        ((classname)?' CLASS="' + classname + '"':'') + 
        ' STYLE="position:' + ((relative)?'relative;':'absolute;') + 
        ' overflow:none;' + 
        ((left)?' left:' + left + 'px;':'') + 
        ((top)?' top:' + top + 'px;':'') + 
        ((height)?' height:' + height + 'px;':'') + 
        ((width)?' width:' + width + 'px;':'') + 
        ((visibility && (visibility!='')) ? ' visibility:' + visibility + ';' : '') + 
        ((z)?' z-index:' + z + ';':'') + 
        ((backgroundColor)?' background-color:' + backgroundColor + ';':'') + 
        ((backgroundImage)?' background-image:url("' + backgroundImage + '");':'') +  
        ((clip)?' clip:rect("' + clip + '");':'') + 
        '">' + ((content)?content:'') + '</DIV>';
  }

  else if (is.nav && (is.major == 4 || !hideEltOnOlderBrowsers) && 
      !useDivInsteadOfLayer)
  { var tagname = (relative)?'ILAYER':'LAYER';
    if (visibility && (visibility!=''))
    {  if (visibility=="hidden") visibility = "hide";
       else if (visibility=="visible") visibility = "show";
    }
    markup = '<' + tagname + ' ID="' + name + '"' + ((classname)?' CLASS="' + 
        classname + '"':'') + ((left)?' LEFT="' + left + '"':'') + 
        ((top)?' TOP="' + top + '"':'') + ((width)?' WIDTH="' + width + '"':'') + 
        ((height)?' HEIGHT="' + height + '"':'') + 
        ((visibility && (visibility!='')) ? ' VISIBILITY="' + visibility + '"' : '') + 
        ((z)?' Z-INDEX="' + z + '"':'') + 
        ((backgroundColor)?' BGCOLOR="' + backgroundColor + '"':'') + 
        ((backgroundImage)?' BACKGROUND="' + backgroundImage + '"':'') +  
        ((clip)?' CLIP="' + layerClipOrder(clip) + '"':'') + 
        '>' + ((content)?content:'') + '</' + tagname + '>';
  }
 
  else if ((is.ie || (is.nav && useDivInsteadOfLayer)) && (is.major>=4 || !hideEltOnOlderBrowsers))
  { markup = '<DIV ID="' + name + '"' +  
        ((classname)?' CLASS="' + classname + '"':'') + 
        ' STYLE="position:' + ((relative)?'relative;':'absolute;') + 
        ' overflow:none;' + 
        ((left)?' left:' + left + 'px;':'') + 
        ((top)?' top:' + top + 'px;':'') + 
        ((height)?' height:' + height + 'px;':'') + 
        ((width)?' width:' + width + 'px;':'') + 
        ((visibility && (visibility!='')) ? ' visibility:' + visibility + ';' : '') + 
        ((z)?' z-index:' + z + ';':'') + 
        ((backgroundColor)?' background-color:' + backgroundColor + ';':'') + 
        ((backgroundImage)?' background-image:url("' + backgroundImage + '");':'') +  
        ((clip)?' clip:rect("' + clip + '");':'') + 
        '">' + ((content)?content:'') + '</DIV>';
  }

  return markup;
}

function writeElt (name, content, left, top, z, width, height, visibility, 
                   backgroundColor, backgroundImage, clip, relative, 
                   hideEltOnOlderBrowsers, useDivInsteadOfLayer, classname) 
{ if (writeElt.arguments.length < 15) classname = false;
  if (writeElt.arguments.length < 14) useDivInsteadOfLayer = false;
  if (writeElt.arguments.length < 13) hideEltOnOlderBrowsers = false;
  if (writeElt.arguments.length < 12) relative = false;
  if (writeElt.arguments.length < 11) clip = false;
  if (writeElt.arguments.length < 10) backgroundImage = false;
  if (writeElt.arguments.length < 9) backgroundColor = false;
  if (writeElt.arguments.length < 8) visibility = false;
  if (writeElt.arguments.length < 7) height = false;
  if (writeElt.arguments.length < 6) width = false;
  if (writeElt.arguments.length < 5) z = false;
  if (writeElt.arguments.length < 4) top = false;
  if (writeElt.arguments.length < 3) left = false;
  if (writeElt.arguments.length < 2) content = false;
  document.write (genElt (name, content, left, top, z, width, height, visibility, 
                    backgroundColor, backgroundImage, clip, relative, 
                 hideEltOnOlderBrowsers, useDivInsteadOfLayer, classname));
}


function getElt () 
{ if (is.nav4)
  {
    var currentLayer = document.layers[getElt.arguments[0]];
    for (var i=1; i<getElt.arguments.length && currentLayer; i++)
    {   currentLayer = currentLayer.document.layers[getElt.arguments[i]];
    }
    return currentLayer;
  } 
  else if(document.getElementById && document.getElementsByName)
  { 
    var name = getElt.arguments[getElt.arguments.length-1];
    if(document.getElementById(name))                      
       return document.getElementById(name);
    else if (document.getElementsByName(name))             
	   return document.getElementsByName(name)[0];
  }
  else if (is.ie4up) {
    var elt = eval('document.all.' + getElt.arguments[getElt.arguments.length-1]);
    return(elt);
  }

}

function showElt(elt)
{
	setEltVisibility(elt,'visible');
}

function hideElt(elt)
{
	setEltVisibility(elt, 'hidden');
}

function setEltVisibility (elt, value)
{  if (is.nav4) elt.visibility = value;
   else if (elt.style) elt.style.visibility = value;
}


function getEltVisibility (elt)
{  if (is.nav4) 
   {  var value = elt.visibility;
      if (value == "show") return "visible";
      else if (value == "hide") return "hidden";
      else return value;
   }
   else if (elt.style) return elt.style.visibility;
}


function moveEltTo (elt, x, y) 
{ if (is.nav4) elt.moveTo(x, y);
  else if (is.ie4up) {
    elt.style.pixelLeft = x;
    elt.style.pixelTop  = y;
  }
  else if (is.gecko) {
    elt.style.left = x;
    elt.style.top  = y;
  }
}


function moveEltBy (elt, x, y) 
{ if (is.nav4) elt.moveBy(x, y);
  else if (is.ie4up)  {
    elt.style.pixelLeft += x;
    elt.style.pixelTop  += y;
  }
  else if (is.gecko)  {
    elt.style.left = (stringToNumber(elt.style.left) + x + "px");
    elt.style.top  = (stringToNumber(elt.style.top)  + y + "px");
  }
}


function getEltPageLeft(elt) {
  var x;

  if (is.nav4)
    return elt.pageX;
  if (is.ie4up) {
    x = 0;
    while (elt.offsetParent != null) {
      x += elt.offsetLeft;
      elt = elt.offsetParent;
    }
    x += elt.offsetLeft;
    return x;
  }
  if (is.gecko) {
    x = 0;
    while (elt.offsetParent != null) {
      x += elt.offsetLeft;
      elt = elt.offsetParent;
    }
    x += elt.offsetLeft;
    return x;
  }
  return -1;
}

function getEltPageTop(elt) {
  var y = 0;

  if (is.nav4)
    return elt.pageY;
  if (is.ie4up) {
    while (elt.offsetParent != null) {
      y += elt.offsetTop;
      elt = elt.offsetParent;
    }
    y += elt.offsetTop;
    return y;
  }

  if (is.mac && is.ie5)
  {
    y += stringToNumber(document.body.currentStyle.marginTop);
  }

  if (is.gecko) {
    while (elt.offsetParent != null) {
      y += elt.offsetTop;
      elt = elt.offsetParent;
    }
    y += elt.offsetTop;
    return y;
  }
  return -1;
}

function setEltLeft (elt, x) {
  if (is.nav4)     elt.left=x;
  else if (is.ie4up) elt.style.pixelLeft=x;
  else if (is.gecko) elt.style.left = (x + "px");
}


function getEltLeft (elt) {
  if (is.nav4)     return (elt.left);
  else if (is.ie4up) return (elt.style.pixelLeft);
  else if (is.gecko) return stringToNumber(elt.style.left);
}

function setEltTop (elt, y) 
{ if (is.nav4)     elt.top=y;
  else if (is.ie4up) elt.style.pixelTop=y;
  else if (is.gecko) elt.style.top= (y + "px");
}

function getEltTop (elt) 
{ if (is.nav4)     return (elt.top);
  else if (is.ie4up) return (elt.style.pixelTop);
  else if (is.gecko) return stringToNumber(elt.style.top);
}

function getEltWidth(elt) {

  if (is.nav4) {
    if (elt.document.width)
      return elt.document.width;
    else
      return elt.clip.right - elt.clip.left;
  }
  if (is.ie4up) {
    if (elt.style.pixelWidth)
      return elt.style.pixelWidth;

    else
      return elt.offsetWidth;
  }
  if (is.gecko) {
    if (elt.style.width)
      return stringToNumber(elt.style.width);
    else
      return stringToNumber(elt.offsetWidth);
  }
  return -1;
}

function setEltWidth(elt,wdth)
{
	if(is.nav4)
    { 
	     elt.document.width = wdth;
    }
    else if(elt.style)
    { 
        elt.style.width = wdth;
    }
}

function getEltHeight(elt) {
  if (is.nav4) {
    if (elt.document.height)
      return elt.document.height;
    else
      return elt.clip.bottom - elt.clip.top;
  }
  if (is.ie4up) {
    if (elt.style.pixelHeight)
      return elt.style.pixelHeight;
    else
      return elt.clientHeight;
  }
  if (is.gecko) {
    if (elt.style.height)
      return stringToNumber(elt.style.height);
    else
      return stringToNumber(elt.offsetHeight);
  }
  return -1;
}

function setEltHeight(elt,hght)
{
	if(is.nav4)
    { 
		elt.document.height = hght;
    }
    else if(elt.style)
    { 
        elt.style.height = hght;
    }
}

function setEltClip (elt, cliptop, clipright, clipbottom, clipleft) 
{ if (is.nav4) {
    elt.clip.left   = clipleft;
    elt.clip.top    = cliptop;
    elt.clip.right  = clipright;
    elt.clip.bottom = clipbottom;
  }
  else if (is.ie4up)  elt.style.clip = 'rect(' + cliptop + ' ' +  
       clipright + ' ' + clipbottom + ' ' + clipleft +')';
  else if (is.gecko)  elt.style.clip = 'rect(' + cliptop + ' ' +  
       clipright + ' ' + clipbottom + ' ' + clipleft +')';
}

function tempClipObj (elt)
{  var clipStr = elt.style.clip;
  
   clipStr = clipStr.substring (clipStr.indexOf("(") + 1);
   this.top = stringToNumber(clipStr);
   clipStr = clipStr.substring (clipStr.indexOf(" ") + 1);
   this.right = stringToNumber(clipStr);
   clipStr = clipStr.substring (clipStr.indexOf(" ") + 1);
   this.bottom = stringToNumber(clipStr);
   clipStr = clipStr.substring (clipStr.indexOf(" ") + 1);
   this.left = stringToNumber(clipStr);
}

function getEltClipLeft (elt) 
{ if (is.nav4)     return (elt.clip.left);
  else if (elt.style) 
  {  var tempClip = new tempClipObj (elt);
     return tempClip.left;
  }
}

function getEltClipTop (elt) 
{ if (is.nav4)     return (elt.clip.top);
  else if (elt.style) 
  {  var tempClip = new tempClipObj (elt);
     return tempClip.top;
  }
}

function getEltClipRight (elt) {
  if (is.nav4)     return (elt.clip.right);
  else if (elt.style) 
  {  var tempClip = new tempClipObj (elt);
     return tempClip.right;
  }

}


function getEltClipBottom (elt) 
{ if (is.nav4)     return (elt.clip.bottom);
  else if (elt.style) 
  {  var tempClip = new tempClipObj (elt);
     return tempClip.bottom;
  }
}


function getEltClipWidth (elt) 
{
    return (getEltClipRight(elt) - getEltClipLeft(elt));
}


function getEltClipHeight (elt) 
{
    return (getEltClipBottom(elt) - getEltClipTop(elt));
}


function getCurrentWinWidth() 
{ if (is.nav4)     return(window.innerWidth);
  else if (is.ie4up) return(document.body.clientWidth);
  else if (is.gecko) return(window.innerWidth);
}


function getCurrentWinHeight() 
{ if (is.nav4)     return(window.innerHeight);
  else if (is.ie4up) return(document.body.clientHeight);
  else if (is.gecko) return(window.innerHeight);

}

function getEltZIndex (elt) 
{ if (is.nav4) return(elt.zIndex);
  else if (elt.style) return (elt.style.zIndex);
}

function setEltZIndex (elt, z) 
{ if (is.nav4) elt.zIndex = z;
  else if (elt.style) elt.style.zIndex = z;
}

function setEltBackgroundImage (elt, imageFilePath) 
{ if (is.nav4) elt.background.src = imageFilePath;
  else if (is.ie4up) elt.style.backgroundImage = "url(" + imageFilePath + ")";
  else if (is.gecko) elt.style.backgroundImage = "url(" + imageFilePath + ")";
}

function getEltBackgroundImage (elt) 
{ if (is.nav4) return (elt.background.src);
  else if (elt.style) { 
     var theURL = elt.style.backgroundImage;
     if (typeof(theURL) == "string")
     {  var URLlen = theURL.length;
        return (theURL.substring (4, URLlen-1));
     }
     else return(theURL);
  }
}

function setEltBackgroundColor (elt, colorNumber) 
{ if (is.nav4) elt.bgColor = colorNumber;
  else if (elt.style) elt.style.backgroundColor = colorNumber;
}

var colorNameString = "aqua,black,blue,fuchsia,gray,green,lime,maroon,navy,olive,purple,red,silver,teal,yellow,white";
var colorNames   = new Array ("aqua", "black", "blue", "fuchsia", "gray",   "green", "lime", "maroon", "navy", "olive",  "purple", "red",    "silver", "teal", "yellow", "white");
var colorNumbers = new Array (0xffff, 0,       0xff,   0xff00ff,  0x808080, 0x8000,  0xff00, 0x800000, 0x80,   0x808000, 0x800080, 0xff0000, 0xc0c0c0, 0x8080, 0xffff00, 0xffffff);



function isColorName (aString)
{ return ( (typeof(aString) == "string") && (colorNameString.indexOf(aString) != -1));
}

function colorNameToNumber (colorName)
{ for (var i=0; i<16; i++) if (colorNames[i]==colorName) return colorNumbers[i];
  return colorName;
}

function colorNumberToName (colorNumber)
{ for (var i=0; i<16; i++) if (colorNumbers[i]==colorNumber) return colorNames[i];
  return null;
}


function getEltBackgroundColor (elt) 
{
  if (is.nav4) return (elt.bgColor);
  else if (is.ie4up) 
  {
     var colorVal = elt.style.backgroundColor;
     if (isColorName(colorVal)) return colorNameToNumber (colorVal);
     else if (typeof(colorVal) == "string") 
          return (("0x" + colorVal.substring(1)) - 0);
     else return colorVal;
  }
  else if (is.gecko) {
    var colorVal = elt.style.backgroundColor;
    
	 if (typeof(colorVal) == "string")
	 { 	
		if (isColorName(colorVal)) 	
		{
			return colorNameToNumber (colorVal);
		}
		else if (colorVal.indexOf(["rgb"]) != -1) 
		{	
			var sR,sG,sB;
			var iR,iG,iB;
			var i=0;

			ColorString = (elt.style.backgroundColor);
			//ColorString = "rgb(255,20,255)";
			ColorString = ColorString.slice(4,-1);

			while(ColorString[i] != ',' && i < 20){i++;}
			sR = ColorString.slice(0,-(ColorString.length - i));
			i++;
			j = i;
			while(ColorString[j] != ',' && j < 20){j++;}
			sG = ColorString.slice(i,0-(ColorString.length - j));
			j++;
			sB = ColorString.slice(j);
			iR = stringToNumber(sR);
			iG = stringToNumber(sG);
			iB = stringToNumber(sB);
			sR = iR.toString(16);if(sR.length < 2)sR = "0" + sR;if(sR.length < 2)sR = "0" + sR;
			sG = iG.toString(16);if(sG.length < 2)sG = "0" + sG;if(sG.length < 2)sG = "0" + sG;
			sB = iB.toString(16);if(sB.length < 2)sB = "0" + sB;if(sB.length < 2)sB = "0" + sB;

			sRGB = sR.toUpperCase()+sG.toUpperCase()+sB.toUpperCase();
			return (("0x" + sRGB)-0);
		}
	 }
     else return colorVal;
  }
}

function stringToNumber(s)
{
        return parseInt(('0' + s), 10)
}