var http_request = false;
   function makeRequest(url, parameters) {
	  var obj	=	arguments[2];
	  if(obj!=null){
		  var objValue	=	obj.value;
		  obj.disabled	=	true;
		  obj.value		=	"Sila tunggu..";
	  }
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
	  
	var result	=	"";
	
	http_request.open("POST", url, false);
	http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	http_request.send(parameters);
	
	if(obj!=null){
		obj.disabled	=	false;
		obj.value	=	objValue;
	}
	
	return http_request.responseText;
}