var http;  
var last_item;

function createRequestObject() {
    if (window.XMLHttpRequest) { http = new XMLHttpRequest(); } 
	else if (window.ActiveXObject) { http = new ActiveXObject("Microsoft.XMLHTTP"); }    
    return http;
}

function makeGetRequest(querystring, target, tag) {	
    http.open('get', querystring);
    http.onreadystatechange = processResponse;
    http.send(null);
	http.target=target;
	http.tag=tag;
}


function processResponse() {
    if(http.readyState == 4){
        var my_res = http.responseText;
		//alert(my_res);
		last_item = my_res;
		//setContent(http.tag,http.target,my_res);
	}
}

function setContent(tag,id,content){
		resp=getElement(tag, id);
		resp.innerHTML=content;
}	  
		  
  
function getElement(tag, id){
		 var nod=document.getElementsByTagName(tag);
		 for(z=0; z < nod.length; z++){
			var my_id=nod[z].getAttribute("id");
			if(my_id==id){				
			   var node=nod[z];
			   return node;
			}
		 }		  
		 return;
}