/**
Initialize the request object. The parameter of fObj is the response function(onreadystatechange) 
*/

	
	function initialize_request(request, fObj){
		request = false;
		if(window.XMLHttpRequest) { //is Mozilla?
			request = new XMLHttpRequest();
			if (request.overrideMimeType) {//set MiME
				request.overrideMimeType('text/xml');
			}
		}
		else if (window.ActiveXObject) { //is IE?
			try {
				request = new ActiveXObject("Msxml2.XMLHTTP");
			} catch (e) {
				try {
					request = new ActiveXObject("Microsoft.XMLHTTP");
				} catch (e) {
					return false;
				}
			}
		}
		
		if (!request) { // if failure
			return false;
		}
		request.onreadystatechange = fObj;
		return request;
	}
	
	
   	   /**
		 *send url to server 
		*/
		
		function send_request(url, request) {
			//alert(url);
			request.open("GET", url, true);
			request.send(null);
		}