function doAdd(id) {
			document.getElementById("frmProduct_"+id).action = "process_cart.php?action=add&refresh="+strRefresh;
			document.getElementById("frmProduct_"+id).target = "frmRemote";
			quantity = document.getElementById("quantity").value;
			if(isNumber(quantity) && parseInt(quantity) > 0) {
				document.getElementById("frmProduct_"+id).submit();
				//document.location = strRefresh;
			} else {
				alert("La quantite doit etre un numero positif");
			}
		}
        function isNumber(str)
		{
			bStatus = true;
			for(var i=0; i<str.length; i++)
			{
				var ch = str.charAt(i);
				if ((ch < '0' || ch > '9') && (ch != "."))
				{	
					bStatus = false;
					break;
				}
			}
			return bStatus;
		}