var MainID = -1;
var host = document.location.host;
var page = document.location.href.substring(document.location.href.indexOf(host)+host.length);
page = page.toLowerCase();

function getMenuId(menuid) {
	return "cat_" + menuid;
}

function hardSetSelectedItem(menuid,pageurl) {
	menuid = getMenuId(menuid);
	pageurl = pageurl.toLowerCase();
	if (pageurl == page) return;
	var ie = 0;
	var detect = navigator.userAgent.toLowerCase();
	if (detect.indexOf('msie') > 0) ie = 1;
	var menus = document.getElementById(menuid);
	if (menus == null) return;
	var tds = menus.getElementsByTagName("td");
	setSelected(tds, pageurl, ie);
}

function getMenuItem(menuid) {
	menuid = getMenuId(menuid);
	var menus = document.getElementById(menuid);
	if (menus == null) return;
	var tds = menus.getElementsByTagName("td");
	for (var i = 0; i < tds.length; i++) {
		var mouseover = tds[i].onmouseover;
		if (mouseover == null) return i;
	}
	return -1;
}

function getMenu(menuid) {
	var temp = false;
	menuid = getMenuId(menuid);
	var menus = document.getElementById(menuid);
	if (menus == null) return false;
	var tds = menus.getElementsByTagName("td");
	for (var i = 0; i < tds.length; i++) {
		if (tds[i].getAttribute("onclick") != null)	{
			itemurl = tds[i].getAttribute("onclick").toString();
			pos = itemurl.indexOf("=");
			if (pos != -1) {
				pos2 = itemurl.indexOf(';');
				itemurl = itemurl.substring(pos+2,pos2-1);
					
				if (itemurl.toLowerCase() == page.toLowerCase()) {
					tds[i].innerHTML="<table align=left border=0 cellpadding=0 cellspacing=0><tr><td width=25><img src='/site_images/icon.png' style=\"position:relative; top:2px;\"></td><td>"+tds[i].innerHTML+"</td></tr></table>";
					temp = true;
				} else {
					tds[i].innerHTML="<table align=left border=0 cellpadding=0 cellspacing=0><tr><td width=25></td><td>"+tds[i].innerHTML+"</td></tr></table>";
				}
			}
		}
	}
	return temp;
}

function getMainID(){
	if (getMenu("457602")) {
		hardSetSelectedItem("135726","/connect.htm"); //top menu
		//hardSetSelectedItem("135733","/generate.htm"); //bottom menu
		MainID=0;
		return;
	}
	if (getMenu("136275")) {
		hardSetSelectedItem("135726","/convert.htm"); //top menu
		//hardSetSelectedItem("135733","/convert.htm"); //bottom menu
		MainID=1;
		return;
	}
	if (getMenu("136276")) {
		hardSetSelectedItem("135726","/measure.htm"); //top menu
		//hardSetSelectedItem("135733","/measure.htm"); //bottom menu
		MainID=2;
		return;
	}
	/*if (getMenu("136273")) {
		hardSetSelectedItem("135726","/case_studies.htm"); //top menu
		//hardSetSelectedItem("135733","/case_studies.htm"); //bottom menu
		MainID=3;
		return;
	}*/
}

function getMain() {
	MainID=getMenuItem("135726");
	if ((MainID == -1) || (MainID >= 0 && MainID <=2)) getMainID();
	if (MainID >= 0 && MainID <= 5) {
		if (MainID >= 0 && MainID <=2) document.getElementById("sub"+MainID).style.display="inline";
		document.getElementById("arrow"+MainID).style.display="inline";
		//var obj = document.getElementById("flash");
		//alert(obj.embedAttrs["src"]);
		//document.getElementById("flash2").src=MainID+".swf";
		/*var so = new SWFObject("/"+MainID+".swf", "mymovie", "811", "211", "8", "#4589B8");
		so.write("flashcontent");
	} else {
		var so = new SWFObject("/common.swf", "mymovie", "811", "211", "8", "#4589B8");
		so.write("flashcontent");*/
	}
}

// correctly handle PNG transparency in Win IE 5.5 and 6.
function correctPNG() {
 var arVersion = navigator.appVersion.split("MSIE")
 var version = parseFloat(arVersion[1])
 if ((version >= 5.5 && version<7) && (document.body.filters)) {
  for(var j=0; j<document.images.length; j++) {
   var img = document.images[j];
   var imgName = img.src.toLowerCase();
   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;
    j = j-1;
   }
  }
 }
}