var ie4 = (document.all != null);
var ns4 = (document.layers != null);
var ns6 = ((document.getElementById) && (navigator.appName.indexOf('Netscape') != -1));
var isMac = (navigator.appVersion.indexOf("Mac") != -1);
var DHTML = (document.getElementById || document.all || document.layers);

if (ie4)
{
	setLayerBg = new Function("layr", "bg", "layr.style.background = bg");
	writeToLayer = new Function("layr", "txt", "layr.innerHTML = txt;");
	showLayer = new Function("layr", "layr.style.visibility = 'visible';");
	hideLayer = new Function("layr", "layr.style.visibility = 'hidden';");
	moveX = new Function("layr", "x", "layr.style.posLeft = x;")	
	moveY = new Function("layr", "y", "layr.style.posTop = y;")	
	setHeight = new Function("layr", "h", "layr.style.pixelHeight = h;");
	getHeight = new Function("layr", "return layr.offsetHeight;");
	setWidth = new Function("layr", "w", "layr.style.pixelWidth = w;");
	getWidth = new Function("layr", "return layr.offsetWidth;");
	getX = new Function("layr", "return layr.style.posLeft;");
	getY = new Function("layr", "return layr.style.posTop;");
	getLayerById = new Function("id", "return document.all(id);");
	getImgInLayerByName = new Function("layr", "name", "return layr.all.tags('img')[name]");
	setZ = new Function("layr", "z", "layr.style.zIndex = z");
	getStyle = new Function("layr", "return layr.style");
	setClip = new Function("layr", "t", "r", "b", "l", "layr.style.clip = 'rect('+t+','+r+','+b+','+l+')';");
	
	assignClickHandler = new Function("layr", "func", "layr.onclick = func;");
	assignMouseOverHandler = new Function("layr", "func", "layr.onmouseover = func;");
	assignMouseOutHandler = new Function("layr", "func", "layr.onmouseout = func;");

	createLayer = createLayerIE;
	getPagePosition = getPagePositionIE;
		
	if (document.getElementById)
	{
		createLayer = createLayerNS6;
	}
	
	adjustDocHeight = new Function(""); // only ns4 needs this function
	getFormInLayer = new Function("layr", "name", "if (name != null) { return layr.all.tags('form')[name]; } else { return layr.all.tags('form')[0]; }");
	getLinksInLayer = new Function ("layr", "return layr.all.tags('a')");
	getChildElements = new Function("layr", "return layr.all;")
	
}
else if (ns4)
{
	setLayerBg = new Function("layr", "bg", "layr.bgColor = bg");
	writeToLayer = new Function("layr", "txt", "layr.document.open(); layr.document.write(txt); layr.document.close();");
	showLayer = new Function("layr", "layr.visibility = 'visible';");
	hideLayer = new Function("layr", "layr.visibility = 'hidden';");
	moveX = new Function("layr", "x", "layr.left = x;")
	moveY = new Function("layr", "y", "layr.top = y;")	
	setHeight = new Function("layr", "h", "layr.clip.height = h;");
	getHeight = new Function("layr", "return layr.clip.height;");
	setWidth = new Function("layr", "w", "layr.clip.width = w;");
	getWidth = new Function("layr", "return layr.clip.width;");
	getX = new Function("layr", "return layr.left;");
	getY = new Function("layr", "return layr.top;");
	getLayerById = getLayerByIdNS4;
	getImgInLayerByName = new Function("layr", "name", "return layr.document.images[name]");
	setZ = new Function("layr", "z", "layr.zIndex = z");
	getStyle = new Function("layr", "return layr.style");
	setClip = new Function("layr", "t", "r", "b", "l", "layr.clip.left = l; layr.clip.right = r; layr.clip.bottom = b; layr.clip.top = t;");
	
	assignClickHandler = new Function("layr", "func", "layr.captureEvents(Event.MOUSEDOWN); layr.onmousedown = func;");
	assignMouseOverHandler = new Function("layr", "func", "layr.onmouseover = func;");
	assignMouseOutHandler = new Function("layr", "func", "layr.onmouseout =  func;");
	
	initWidth = window.innerWidth;
	initHeight = window.innerHeight;
	
	

	createLayer = createLayerNS4;
	getPagePosition = getPagePositionNS4;
	getFormInLayer = new Function("layr", "name", "if (name != null) { return layr.document.forms[name]; } else { return layr.document.forms[0]; }");
	getLinksInLayer = new Function ("layr", "return layr.document.links");
	
	getChildElements = new Function("layr", "return null;")
}
else if (ns6) 
{
	setLayerBg = new Function("layr", "bg", "layr.style.background = bg");	
	writeToLayer = new Function("layr", "txt", "layr.innerHTML = txt;");
	showLayer = new Function("layr", "layr.style.visibility = 'visible';");
	hideLayer = new Function("layr", "layr.style.visibility = 'hidden';");
	moveX = new Function("layr", "x", "layr.style.left = x;")	
	moveY = new Function("layr", "y", "layr.style.top = y;")
	setHeight = new Function("layr", "h", "layr.style.height = h;");
	getHeight = new Function("layr", "return layr.offsetHeight;");	
	setWidth = new Function("layr", "w", "layr.style.width = w;");
	getWidth = new Function("layr", "layr.style.width = 'auto'; return layr.offsetWidth;");	
	getX = new Function("layr", "return parseInt(layr.style.left);");
	getY = new Function("layr", "return parseInt(layr.style.top);");	
	getLayerById = new Function("id", "return document.getElementById(id);");
	getImgInLayerByName = new Function("layr", "name", "return null");
	setZ = new Function("layr", "z", "layr.style.zIndex = z");
	getStyle = new Function("layr", "return layr.style");
	setClip = new Function("layr", "t", "r", "b", "l", "layr.style.clip = 'rect('+t+','+r+','+b+','+l+')';");
	
	assignClickHandler = new Function("layr", "func", "layr.addEventListener('click', func, true);");	
	assignMouseOverHandler = new Function("layr", "func", "layr.addEventListener('mouseover', func, false);");
	assignMouseOutHandler = new Function("layr", "func", "layr.addEventListener('mouseout', func, false);");

	createLayer = createLayerNS6;
	getPagePosition = getPagePositionNS6;	
	
	adjustDocHeight = new Function(""); // only ns4 needs this function
	getFormInLayer = new Function("layr", "name", "if (name != null) { return layr.getElementsByTagName('form')[name]; } else { return layr.getElementsByTagName('form')[0]; }");
	getLinksInLayer = new Function ("layr", "return layr.getElementsByTagName('a')");
	getChildElements = new Function("layr", "return layr.childNodes;")
	
	
}

function createLayerIE(id, container)
{
	id += new Date().getTime(); //makes sure id is unique on page
	var layr = '<div id="' + id + '" style="position:absolute"></div>'	
	if (container == null)
	{
		container = document.body;
	}	
	container.insertAdjacentHTML("afterBegin", layr)
	
	return container.all(id); 
}

function createLayerNS6(id, container)
{
	var layr = document.createElement("div");
	layr.style.position = "absolute";
	layr.style.visibility = "hidden";
	if (container == null)
	{
		container = document.body;
	}
	container.appendChild(layr);
	return layr;
}

function createLayerNS4(id, container)
{
	var layr;
	
	if (container == null) 
	{ 	
		layr = new Layer(); 		
	}
	else
	{
		layr = new Layer(192, container);	
	}
	
	return layr;
}

function getLayerByIdNS4(id, layrs)
{
	var layr;

	if (layrs == null)
	{
		layrs = document.layers;
	}
	
	var l = layrs.length;
	
	for (var i = 0; i < l; i++)
	{
		if (layrs[i].id == id)
		{
			layr = layrs[i];
		}
		else if(layrs[i].document.layers.length > 0)
		{
			layr = getLayerByIdNS4(id, layrs[i].document.layers);
		}
		if (layr != null)
		{
			return layr;
		}		
	}
		
	return layr;
}

function getPagePositionIE(el, n, axis)
{
	if (axis == "x")
	{
    		n += el.offsetLeft;	
	}
	else if (axis == "y")
	{
    		n += el.offsetTop;
	}
    	if (el != document.body)
    	{
    	    if (isMac)
    	    {
    	        parentalUnit = el.parentElement;
    	    } else
    	    {
    	        parentalUnit = el.offsetParent;
    	    }
			
    	    return getPagePositionIE(parentalUnit, n, axis);
    	}
    	return n;
}

function getPagePositionNS4(el, n, axis)
{
	if (axis == "x")
	{
		return el.pageX;
	}
	else
	{
		return el.pageY;
	}
}

function getPagePositionNS6(el, n, axis)
{
	if (axis == "x")
	{
		n += el.offsetLeft;
	}
	else
	{
		n += el.offsetTop;
	}
	
	if (el.offsetParent != null)
	{
				
		return getPagePosition(el.offsetParent, n, axis);
	}
	else
	{
		return n;
	}
}

function adjustDocHeight()
{
	var l = document.layers.length;
	for (var i = 0; i < l; i++)
	{
		if (document.layers[i].top + document.layers[i].clip.height > document.height)
		{
			document.height = document.layers[i].top + document.layers[i].clip.height;
		}
	}
}






function hasClass(obj) {
    var result = false;
    if (obj.getAttributeNode("class") != null) {
        result = obj.getAttributeNode("class").value;
    }
    return result;
 }   

 function stripe(id) {
   var even = false;
   var evenColor = arguments[1] ? arguments[1] : "#fff";
   var oddColor = arguments[2] ? arguments[2] : "#eee";
   var highlightColor = arguments[3] ? arguments[3] : "yellow";

   var table = document.getElementById(id);
   if (! table) { return; }

   var tbodies = table.getElementsByTagName("tbody");
 for (var h = 0; h < tbodies.length; h++) {    
     var trs = tbodies[h].getElementsByTagName("tr");
     for (var i = 0; i < trs.length; i++) {
    trs[i].onmouseover = function() { this.oldColor = this.style.backgroundColor; this.style.backgroundColor = highlightColor }
      trs[i].onmouseout = function() { this.style.backgroundColor =  this.oldColor }
	 trs[i].style.cursor = "default";
	 if (!hasClass(trs[i]) && ! trs[i].style.backgroundColor) {
         var tds = trs[i].getElementsByTagName("td");

         trs[i].style.backgroundColor = even ? evenColor : oddColor;  

/*           
*           for (var j = 0; j < tds.length; j++) {
*         
*             var mytd = tds[j];
* 	           if (! hasClass(mytd) && ! mytd.style.backgroundColor) {*                            
* 		         mytd.style.backgroundColor = even ? evenColor : oddColor;*               
*             }
*           }
*/
       }        
       even = !even;
     }
   }
 }