/***********************************************
* Dynamic Ajax Content- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code
***********************************************/

var loadedobjects=""
var rootdomain="http://"+window.location.hostname
var myDivs = new Array();
function ClearDivs()
{
	for (x in myDivs) {
		ajaxpage("/znain_navs/blank.htm",x);
		}
}
/***Combo Menu Load Ajax snippet**/
function ajaxcombo(selectobjID, loadarea){
	var selectobj=document.getElementById? document.getElementById(selectobjID) : ""
	if (selectobj!="" && selectobj.options[selectobj.selectedIndex].value!="")
		ajaxpage(selectobj.options[selectobj.selectedIndex].value, loadarea)
}

function ajaxpage(url, containerid){
	var page_request = false
		if ((myDivs[containerid] == url) && (url.indexOf("zmain_navs") >= 0)) {
			url = "/zmain_navs/blank.htm";
			myDivs[containerid] = "blank";
			}
		else {
			myDivs[containerid] = url;
			}
//		if (containerid == "general_info") {sessvars.general_info = url;}
//		if (containerid == "srss_culture") {sessvars.srss_culture = url;}
//		if (containerid == "just_for_you") {sessvars.just_for_you = url;}
//		if (containerid == "staff") {sessvars.staff = url;}
//		if (containerid == "students") {sessvars.students = url;}
//		if (containerid == "related_sites") {sessvars.related_sites = url;}
		sessvars.navlefturl = url; sessvars.nevleftid = containerid;
		if (window.XMLHttpRequest) // if Mozilla, Safari etc
			page_request = new XMLHttpRequest()
		else if (window.ActiveXObject){ // if IE
			try {
				page_request = new ActiveXObject("Msxml2.XMLHTTP")
			} 
			catch (e){
				try{
					page_request = new ActiveXObject("Microsoft.XMLHTTP")
				}
				catch (e){}
			}
		}
		else
			return false
			page_request.onreadystatechange=function(){
				loadpage(page_request, containerid)
		}
		page_request.open('GET', url, true)
			page_request.send(null)
}


function loadpage(page_request, containerid){
	if (containerid != null && page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
			document.getElementById(containerid).innerHTML=page_request.responseText;
}

function loadobjs(){
	if (!document.getElementById)
		return
		for (i=0; i<arguments.length; i++){
			var file=arguments[i]
			var fileref=""
				if (loadedobjects.indexOf(file)==-1){ //Check to see if this object has not already been added to page before proceeding
					if (file.indexOf(".js")!=-1){ //If object is a js file
						fileref=document.createElement('script')
							fileref.setAttribute("type","text/javascript");
						fileref.setAttribute("src", file);
					}
					else if (file.indexOf(".css")!=-1){ //If object is a css file
						fileref=document.createElement("link")
							fileref.setAttribute("rel", "stylesheet");
						fileref.setAttribute("type", "text/css");
						fileref.setAttribute("href", file);
					}
				}
				if (fileref!=""){
					document.getElementsByTagName("head").item(0).appendChild(fileref)
						loadedobjects+=file+" " //Remember this object as being already added to page
				}
		}
}