function getXMLHTTP2(){
	
	var xhr=null;
	if(window.XMLHttpRequest){ // Firefox et autres
		xhr = new XMLHttpRequest();
	}
	else if(window.ActiveXObject){ // Internet Explorer
		try {
			xhr = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e) {
			try {
				xhr = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e1) {
				xhr = null;
			}
		}
	}
	else { // XMLHttpRequest non supporté par le navigateur
		alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest...");
	}
	return xhr;
}



function sub_tri(tri) {
	
	var type = document.getElementById(tri).value;
	
	if(!type) return false;
	//alert(type);
	
	var xhr = getXMLHTTP2();
	
	xhr.onreadystatechange  = function()
    { 
         if(xhr.readyState  == 4)
         {
              if(xhr.status  == 200) {
				  
				  //alert(xhr.responseText);
				  document.location.reload();
			  }
              /*else 
                 document.ajax.dyn="Error code " + xhr.status;*/
         }
    }; 

    xhr.open("POST", "set-type-tri.php", true);
 	xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");                  
 	xhr.send("type_tri="+type);
	
}