function chgt(nomimage,imageutilise) 
				{ 
				  document.getElementById(nomimage).src=imageutilise;  
				}
				
				function interface_pop_up(URL,LARG,HAUT,RESIZE,SCROLLING)
				{
					window.open(URL , "" ,"width="+LARG+",height="+HAUT+",resizable="+RESIZE+",scrollbars="+SCROLLING+",menubar=no,toolbar=no,directories=no,location=no,status=no");
				}
				
				function montre(id) 
				{
					if (document.getElementById) 
					{
						document.getElementById(id).style.display="block";
					} 
					else if (document.all) 
					{
						document.all[id].style.display="block";
					} 
					else if (document.layers) 
					{
						document.layers[id].display="block";
					}
				}
				
				function cache(id) 
				{
					if (document.getElementById) 
					{
						document.getElementById(id).style.display="none";
					}
					else if (document.all) 
					{
						document.all[id].style.display="none";
					} 
					else if (document.layers) 
					{
						document.layers[id].display="none";
					}
				}
				
				function chiffres(event)
        {
          // Compatibilité IE / Firefox
          if(!event&&window.event)
          {
            event=window.event;
          }

          // IE
          if(event.keyCode < 48 || event.keyCode > 57)
          {
            event.returnValue = false;
            event.cancelBubble = true;
          }

          // DOM
          if(event.which < 48 || event.which > 57)
          {
            event.preventDefault();
            event.stopPropagation();
          }
        }
				
			  function imprime() 
			  {
			    if (typeof(window.print) != 'undefined')
			    { 
			      window.print(); 
			    }
			  }