validation code

 function YourButtonClickEvent() {
            var validation = Page_ClientValidate();
            if (!validation) {
                for (var i = 0; i < Page_Validators.length; i++) {
                    if (!Page_Validators[i].isvalid) {
                        $("#" + Page_Validators[i].controltovalidate).css("border-color", "red");
                    }
                }
            }
            return val;
        }