function loadajax(divId, url, loader, data){
	// gestion du signe +
	var plusEscape = "%" + "+".charCodeAt(0).toString(16).toUpperCase();
	var data = data.split("+").join(plusEscape);	
	
	var xhr_object = null;
	if(window.XMLHttpRequest) // Firefox
	  xhr_object = new XMLHttpRequest();
	else if(window.ActiveXObject) // Internet Explorer
	  xhr_object = new ActiveXObject("Microsoft.XMLHTTP");
	else { // XMLHttpRequest non supporté par le navigateur
	  alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest...");
	  return;
	}
	xhr_object.open("POST", url, true);
	xhr_object.onreadystatechange = function() {
	  if(xhr_object.readyState == 4){
		 var tmp = xhr_object.responseText.split(":");
		 
		// hack ie
		if(navigator.appName=="Microsoft Internet Explorer"){
			document.getElementById(divId).innerHTML="<div style='display:none;'>&nbsp;</div>"+xhr_object.responseText;
		} else {
			document.getElementById(divId).innerHTML = xhr_object.responseText;
		}
		
		try{
			var l=document.getElementById(divId).getElementsByTagName('script').length;
			for(var j=0;j<l;j++){
				var script = document.createElement('script');
				script.type = 'text/javascript';
				script.text = document.getElementById(divId).getElementsByTagName('script').item(j).text;
				document.getElementsByTagName('head')[0].appendChild(script);
			}
		}catch(e){
			alert(e);
		}
	  }	else {
		  document.getElementById(divId).innerHTML=loader;
	  }
	}
	xhr_object.setRequestHeader("Content-type", "application/x-www-form-urlencoded");   
	xhr_object.send(data);
}
function loadajax_after(divId, url, loader, data){
	var xhr_object = null;
	
	if(window.XMLHttpRequest) // Firefox
	  xhr_object = new XMLHttpRequest();
	else if(window.ActiveXObject) // Internet Explorer
	  xhr_object = new ActiveXObject("Microsoft.XMLHTTP");
	else { // XMLHttpRequest non supporté par le navigateur
	  alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest...");
	  return;
	}
	xhr_object.open("POST", url, true);
	xhr_object.onreadystatechange = function() {
	  if(xhr_object.readyState == 4){
		 var tmp = xhr_object.responseText.split(":");
		
		// hack ie
		if(navigator.appName=="Microsoft Internet Explorer"){
			document.getElementById(divId).innerHTML+="<div style='display:none;'>&nbsp;</div>"+xhr_object.responseText;
		} else {
			document.getElementById(divId).innerHTML+= xhr_object.responseText;
		}
	  }
	}
	xhr_object.setRequestHeader("Content-type", "application/x-www-form-urlencoded");   
	xhr_object.send(data);
}