var sectionRenderID = "";

function loadXMLDoc(url) {
	// branch for native XMLHttpRequest object
	if (window.XMLHttpRequest) {
		req = new XMLHttpRequest();
		req.onreadystatechange = processReqChange;
		req.open("GET", url, true);
		req.send(null);
		// branch for IE/Windows ActiveX version
	} else if (window.ActiveXObject) {
		req = new ActiveXObject("Microsoft.XMLHTTP");
		if (req) {
			req.onreadystatechange = processReqChange;
			req.open("GET", url, true);
			req.send();
		}
	}
}

function processReqChange() {
	// only if req shows "complete"
	if (req.readyState == 4) {
		// only if "OK"
		if (req.status == 200) {

			var targ = document.getElementById(sectionRenderID);

			if (targ) {
				targ.innerHTML = req.responseText;				
				var paramReleaseId=getParam('releaseId', ajaxURL);
				if(paramReleaseId != null && paramReleaseId != ''){
					tracksSWF(paramReleaseId,getParam('imagePath', ajaxURL));
				}	
			}

		} else {
			alert("An Error occurred while performing the required operation:\n" + req.statusText);
		}
	}
}

function pageSubmit(url, renderID) {
		sectionRenderID = renderID;
		loadXMLDoc(url);
		ajaxURL=url;
}

function getParam(name, ajaxURL)
{
	  var regexS = "[\\?&]"+name+"=([^&#]*)";
	  var regex = new RegExp( regexS );
	  var tmpURL = ajaxURL;
	  var results = regex.exec( tmpURL );
	  if( results == null )
	    return "";
	  else
	    return results[1];
}