var ie=document.all&&navigator.userAgent.indexOf("Opera")==-1
var dom=document.getElementById&&navigator.userAgent.indexOf("Opera")==-1
var getFFVersion=navigator.userAgent.substring(navigator.userAgent.indexOf("Firefox")).split("/")[1]
var FFextraHeight=getFFVersion>=0.1? 16 : 0 //extra height in px to add to iframe in FireFox 1.0+ browsers


var toggle=new Array(20);
for(i=0;i<toggle.length;i++){
		toggle[i]="off";
}
function unstyleActiveProduct(id){

			var activeProduct = document.getElementById(id);
			//if(activeProduct!=null)
				//activeProduct.style.fontWeight = 'normal';
			
			//var subNodes = activeTbody.childNodes;
			//for(i=0;i<subNodes.length;i++)
			//	activeTbody.removeChild(subNodes[i]);
		
				
}
							  
							  
function show_submenu(element_id, submenuInput, page, count, product_id){
	var submenuText;
	var submenuLink;
	var submenuCell;
	var submenuRow;
	var tbElm;
	if(toggle[count] == "off"){
	
		for(i=0;i<submenuInput.length;i++){
			submenuText = document.createTextNode(submenuInput[i][1]);	
			
			submenuLink = document.createElement("a");
			submenuLink.setAttribute("href","index.php?page="+page+"&"+page+"_id="+submenuInput[i][0]);	
			submenuLink.appendChild(submenuText);
			submenuLink.setAttribute("id", "tea_"+ product_id);			
			if(product_id == submenuInput[i][0])
				submenuLink.style.fontWeight='bold';

			submenuDiv = document.createElement("div");
			submenuDiv.style.marginLeft="20";
			submenuDiv.appendChild(submenuLink);
			
			submenuCell = document.createElement("td");
			submenuCell.appendChild(submenuDiv)
			
			submenuRow = document.createElement("tr"); 
			submenuRow.appendChild(submenuCell)

			
			tbElm = document.getElementById(element_id).getElementsByTagName("TBODY")[0];
			tbElm.appendChild(submenuRow);
			
		}
	
	toggle[count]="on";
	}else if(toggle[count] == "on"){
		
		
		tbElm = document.getElementById(element_id).getElementsByTagName("TBODY")[0];	
		submenuRow =	tbElm.getElementsByTagName("tr");	
		submenuQty = 	submenuRow.length-1;
		
		for(i=0;i<submenuQty;i++){
			
			tbElm.removeChild(submenuRow[1]);
		}
	
		toggle[count]="off";
	}
}


if (navigator.appVersion.indexOf("2.") != -1){
	check = false;
	}

if ((navigator.appVersion.indexOf("3.") != -1) && (navigator.appName.indexOf("Explorer") != -1)){
	check = false;
}else {
	check = true;
}

if (check == true){
	image1 = new Image();
	image1.src = "../images/black_tea_off.gif";
	image1on = new Image();
	image1on.src = "../images/black_tea_on.gif";
	image1stay = new Image();
	image1stay.src = "images/black_tea_on.jpg";


	image2 = new Image();
	image2.src = "images/syllabus_off.jpg";
	image2on = new Image();
	image2on.src = "images/syllabus_over.jpg";
	image2stay = new Image();
	image2stay.src = "images/syllabus_on.jpg";
	
	image3 = new Image();
	image3.src = "images/assignment_off.jpg";
	image3on = new Image();
	image3on.src = "images/assignment_over.jpg";
	image3stay = new Image();
	image3stay.src = "images/assignment_on.jpg";
	
	image4 = new Image();
	image4.src = "images/articles_off.jpg";
	image4on = new Image();
	image4on.src = "images/articles_over.jpg";
	image4stay = new Image();
	image4stay.src = "images/articles_on.jpg";
	
	image5 = new Image();
	image5.src = "images/miscellaneous_off.jpg";
	image5on = new Image();
	image5on.src = "images/miscellaneous_over.jpg";
	image5stay = new Image();
	image5stay.src = "images/miscellaneous_on.jpg";
}

var imageStay = "";

function imageon(name){
	if (imageStay != name){
        	document[name].src = eval(name + "on.src");
	}
}

function imageoff(name){
	if (imageStay != name){
        	document[name].src = eval(name + ".src");
	}
}

function on(name){
        if (check == true){
	imageon(name);
	}
}
function off(name){
        if (check == true){
	imageoff(name);
	}
}

function stay(name){
	if (check == true){
	document[name].src = eval(name + "stay.src");
	if (imageStay != name){
		if (imageStay != ""){
			document[imageStay].src = eval(imageStay + ".src");
		}
	}
	imageStay = name
	}
}


function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

function MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}