// JavaScript Document
	  	function creat_Object()	{ 
			var xmlhttp; 

			if (!xmlhttp && typeof XMLHttpRequest != 'undefined') 
			{ 
				try { 
					xmlhttp = new XMLHttpRequest(); 
				} 
				catch (e) { 
					alert('Your browser is not supporting XMLHTTPRequest'); 
					xmlhttp = false; 
				} 
			} 

			else 
			{ 
				xmlhttp = new ActiveXObject('Microsoft.XMLHTTP'); 
			} 

			return xmlhttp; 
		}
		var http_request = creat_Object();
				
   		function makePOSTRequest(callback_func, id, url, parameters) {
      
      		http_request.onreadystatechange = sever_interaction;
      		http_request.open('POST', url, true);
      		http_request.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
      		http_request.setRequestHeader('Content-length', parameters.length);
     		http_request.setRequestHeader('Connection', 'close');
     		http_request.send(parameters);
   		}				
				
   		function makeGETRequest(callback_func, id, url, parameters) {
      		http_request.open('get', url);
     		http_request.setRequestHeader('Connection', 'close');
      		http_request.onreadystatechange = eval(callback_func);
			http_request.send(parameters); 

   		}