/***********************************************
* Switch Content script- © Dynamic Drive (www.dynamicdrive.com)
* This notice must stay intact for use
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/

function getLayerObj(lyr) {
	var lyrobj;
	
	if (document.getElementById) {
		lyrobj = document.getElementById(lyr).style;
	} else if (document.all) {
		lyrobj = document.all[lyr].style;
	} else if (document.layers) {
		lyrobj = document.layers[lyr];
	}

	return lyrobj;
}

var enablepersist="on"; //Enable saving state of content structure? (on/off)

if (document.getElementById) {
	document.write('<style type="text/css">');
	document.write('.switchcontent{display:none;}');
	document.write('<'+'/style>');
}

function getElementbyClass(classname) {
	ccollect=new Array();
	var inc=0;
	var alltags;
	
	if (document.all)
		alltags = document.all;
	else if (document.getElementById)
		alltags = document.getElementsByTagName("*");
	else if (document.layers)
		alltags = document.layers;
		
	for (i=0; i< alltags.length; i++){
		if (alltags[i].className==classname)
			ccollect[inc++]=alltags[i];
	}
}

function contractcontent(omit){
	var inc=0;
	while (ccollect[inc]){
		if (ccollect[inc].id!=omit)
			ccollect[inc].style.display="none";
		inc++
	}
}

function expandcontent(cid){
	if (typeof ccollect!="undefined"){
		contractcontent(cid);
		getLayerObj(cid).display = (getLayerObj(cid).display!="block") ? "block" : "none";
		selectedItem=cid+"|"+getLayerObj(cid).display;
	}
}

function revivecontent(){
	selectedItem=getselectedItem();
	selectedComponents=selectedItem.split("|");
	contractcontent(selectedComponents[0]);
	getLayerObj(selectedComponents[0]).display=selectedComponents[1];
}

function get_cookie(Name) { 
	var search = Name + "=";
	var returnvalue = "";
	if (document.cookie.length > 0) {
		offset = document.cookie.indexOf(search);
		if (offset != -1) { 
			offset += search.length;
			end = document.cookie.indexOf(";", offset);
			if (end == -1) end = document.cookie.length;
			returnvalue=unescape(document.cookie.substring(offset, end))
		}
	}
	return returnvalue;
}

function getselectedItem(){
	if (get_cookie(window.location.pathname) != "") {
		selectedItem=get_cookie(window.location.pathname);
		return selectedItem;
	}
	else
	return "";
}

function saveswitchstate(){
	if (typeof selectedItem!="undefined")
		document.cookie=window.location.pathname+"="+selectedItem
}

function do_onload(){
	getElementbyClass("switchcontent")
	if (enablepersist=="on" && getselectedItem()!="")
		revivecontent()
}


if (window.addEventListener)
 	window.addEventListener("load", do_onload, false)
else if (window.attachEvent)
 	window.attachEvent("onload", do_onload)
else if (document.getElementById)
 	window.onload=do_onload

if (enablepersist=="on" && document.getElementById)
	window.onunload=saveswitchstate