var http_request = false;
   var msg;
   var method;
   
   function makePOSTRequest(url, parameters, pmethod, pmsg) {
   		msg = pmsg;
   		method = pmethod;
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
            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;
      }
      
      http_request.onreadystatechange = alertContents;
      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 alertContents() {

      if (http_request.readyState == 1) {
        $('#overlay').fadeIn();    
      }

      if (http_request.readyState == 4) {
      $('#overlay').fadeOut();

         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;
            
            
          	if (method == "alert") {
          		alert(msg);
          	} else
          		if (method == "location") {
          			document.location = msg;
          		} else
          			if (method == "exec") {
	          			maF = new Function("", msg);
  	        			maF();
								} else
									if (method == "test") {
										
										alert(result);
										
									} else {
										
									}
								
            
            
         } else {
            alert("Une erreur s'est produite lors de l'execution de l'XMLHttpRequest dans le fichier [/adherent/inc/xmlhttprequest.js.php]");
         }
      }
   }