function ajax(fichier) {
	xhr_object = null;
	if(window.XMLHttpRequest){ // FIREFOX
	  xhr_object = new XMLHttpRequest();
	
	}else if(window.ActiveXObject){ // IE
	  xhr_object = new ActiveXObject("Microsoft.XMLHTTP");
		
		
	}else{
	  return(false);
	}
	xhr_object.open("GET", fichier, false);
	xhr_object.send(null);
	if(xhr_object.readyState == 4){
		return(xhr_object.responseText);
	}
	else
	{
		return(false);
	}
}