////Ajax related settings - Drew Waller - 2009
var fizzbustcache=true //bust potential caching of external pages after initial Ajax request? (1=yes, 0=no)
var bustcacheparameter="";
var fizzloadstatustext="<img src='images/throbber.gif' /> Requesting content..." //HTML to indicate Ajax page is being fetched
var fizzexternalfiles=[] //External .css or .js files to load to style the external content(s), if any. Separate multiple files with comma ie: ["cat.css", dog.js"]

var Fizz; if (!Fizz) Fizz={};

////////////////Ajax Related functions //////////////////////////////////

Fizz.ajaxpage=function(url, callback, qry){

	var page_request = false
	var bustcacheparameter=""
	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;
	
	//document.getElementById("msg").innerHTML=fizzloadstatustext;
	// exclude readystate hander from synch call
	     if(!(url.match(/^store\.asp/))) {
	           page_request.onreadystatechange=function(){
		if (typeof(page_request.responseText)=="unknown") {
			return("");
		} else {
			Fizz.loadpage(url+bustcacheparameter,page_request, callback);
		}          
	           }
	      }

	if (fizzbustcache) //if bust caching of external page
		bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime();
		// switch to synchronous mode on the 'onbeforeunload' event
			 if(url.match(/^store\.asp/)) {
				page_request.open('POST', url+bustcacheparameter, false);
			} else {
				page_request.open('POST', url+bustcacheparameter, true);
			}			
	page_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	//document.getElementById("dbug").innerHTML+=qry;
	try {
		page_request.send(qry);
   	} catch (e) {
		document.getElementById("dbug").innerHTML+="error: "+e;
		alert(e);
   	}	
}

Fizz.loadpage=function(url,page_request, callback){
//	if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
	if (page_request.readyState == 4 && (page_request.status==200 || page_request.status==0))
		//document.getElementById(callback).innerHTML=page_request.responseText+" "+url;
		try {
			 if(url.match(/^init\.asp/)) Fizz.statusCookie(page_request.responseText);
			 if(url.match(/^retrieve\.asp/)) Fizz.reloadOrder(page_request.responseText);
		} catch(e) {
			 alert(e);
  		}
}

Fizz.statusCookie=function(uid) {
	//	document.getElementById('dbug').innerHTML+="Key: "+uid;
	//	document.cookie = "fsStatus=" +uid;
	};

Fizz.reloadOrder=function(obj) {
  			var f=document.getElementById("dw");
 			var s=document.getElementById("sx");
			//document.getElementById("responder").innerHTML=obj;

 			var stored=unescape(obj);//alert(stored.length);
 			if(stored.length==0 || unescape(stored) == "[]") { return; } 
 				thisOrder.orders=eval('('+stored+')');
  				if (thisOrder.orders[0].currency=="USD") {
  				     f.elements[2].checked=true;
  				     swapCurrency("load","USD");
  				} else if (thisOrder.orders[0].currency=="EUR") {
  				     f.elements[1].checked=true;
  				     swapCurrency("load","EUR");
  				} else {
  				     f.elements[0].checked=true;
  				     swapCurrency("load","GBP");
  				}
  				s.elements[thisOrder.orders[0].shippoint].checked=true;
  				shippingPointer=parseInt(thisOrder.orders[0].shippoint);
  				recalcOrderTotal();

}

Fizz.loadobjects=function(externalfiles){ //function to load external .js and .css files. Parameter accepts a list of external files to load (array)
	for (var i=0; i<externalfiles.length; i++){
		var file=externalfiles[i]
		var fileref=""
		if (csloadedobjects.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)
			csloadedobjects+=file+" " //Remember this object as being already added to page
		}
	}
}