function correctPNG() // correctly handle PNG transparency in Win IE 5.5 & 6.
{
   var arVersion = navigator.appVersion.split("MSIE")
   var version = parseFloat(arVersion[1])
   if ((version >= 5.5) && (document.body.filters))
   {
      for(var i=0; i<document.grfx.length; i++)
      {
         var img = document.grfx[i]
         var imgName = img.src.toUpperCase()
         if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
         {
            var imgID = (img.id) ? "id='" + img.id + "' " : ""
            var imgClass = (img.className) ? "class='" + img.className + "' " : ""
            var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
            var imgStyle = "display:inline-block;" + img.style.cssText
            if (img.align == "left") imgStyle = "float:left;" + imgStyle
            if (img.align == "right") imgStyle = "float:right;" + imgStyle
            if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
            var strNewHTML = "<span " + imgID + imgClass + imgTitle
            + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
            + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
            + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>"
            img.outerHTML = strNewHTML
            i = i-1
         }
      }
   }
}



var plusImage = "grfx/closed.gif";
var minusImage = "grfx/opened.gif";
var imageTagSuffix = "img";
var nodeSeparator = ".";

function collapseAll(objs) {
var i;
for (i=0;i<objs.length;i++ ) {
objNode = document.getElementById(objs[i]);
objImg  = document.getElementById(objs[i] + nodeSeparator + imageTagSuffix);
if (objNode.style.display == "") {
		if (objImg != null) objImg.src = plusImage;
		if (objNode != null) objNode.style.display = "none";
        }
}
}

/* Function to switch visibility of a Node */
function Collapse(Node) {
objs=new Array('u1','u2','u3');
collapseAll(objs);
	objNode = document.getElementById(Node);

	/* Get image object of Node */
	objImg  = document.getElementById(Node + nodeSeparator + imageTagSuffix);

	/* Check if Child exists. If does not exist then Reset n = 1 & exit function & */

  	if (objNode.style.display == "") {
		// row is visible, hide it
		if (objImg != null) objImg.src = plusImage;
		if (objNode != null) objNode.style.display = "none";
	} else {
	   //	 row is hidden, show it
		if (objImg != null) objImg.src = minusImage;
		if (objNode != null) objNode.style.display = "";
        	}


}

navHover = function() {
	var lis = document.getElementById("items").getElementsByTagName("LI");
	for (var i=0; i<lis.length; i++) {
		lis[i].onmouseover=function() {
			this.className+=" iehover";
		}
		lis[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" iehover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", navHover);