// JavaScript Document

	var request;

	//event handler for XMLHttpRequest
	function handleResponse(){
		if(request.readyState == 4){
			if(request.status == 200){
				/*Grab the result as a string*/
				var info = request.responseText;
				document.getElementById("divMetadata").innerHTML =info;
				
			} else {
				alert("A problem occurred with communicating between the XMLHttpRequest object and the server program.");
			}
		}//end outer if
	}
	
	/* Initialize a Request object that is already constructed */
	function initReq(reqType,url,bool){
		/* Specify the function that will handle the HTTP response */
		request.onreadystatechange=handleResponse;
		request.open(reqType,url,bool);
		request.send(null);
	}
	
	/* Wrapper function for constructing a Request object.
	 Parameters:
	  reqType: The HTTP request type such as GET or POST.
	  url: The URL of the server program.
	  asynch: Whether to send the request asynchronously or not. */
	function httpRequest(reqType,url,asynch){
		//Mozilla-based browsers
		if(window.XMLHttpRequest){
			request = new XMLHttpRequest();
		} else if (window.ActiveXObject){
			request=new ActiveXObject("Msxml2.XMLHTTP");
			if (! request){
				request=new ActiveXObject("Microsoft.XMLHTTP");
			}
		 }
		//the request could still be null if neither ActiveXObject
		//initializations succeeded
		if(request){
		   initReq(reqType,url,asynch);
		}  else {
			alert("Your browser does not permit the use of all "+
			"of this application's features!");}
	}