$(function()
{
var urlBase = getBaseURL();
$("#ville").autocomplete({
       delay: 50,
       minLength: 3,
       source : urlBase + "layout/autocomplete?length=3&type=ville&site=1",
	   select : function(event,ui){
           var ville = ui.item.value;
           $('#id_ville').val(ui.item.id);
           return ville;
       }
}
);
    });