only take two digits after decimal

 function ValidateFloat(var1) {
            var re = new RegExp("^\\s*-?(\\d+(\\.\\d{1,2})?|\\.\\d{1,2})\\s*$", "g");
            if (var1.val() != 0) {
                if (!re.test(var1.val())) {
                    return false;
                }
            }
            return true;
        }