Enhancing the presentation of standard validator outputs

using System;
using System.Collections.Generic;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace UserControls.HighlightValidators.Helpers
{
    public class EventHelper
    {
        public static void OnLoad(BaseValidator validator)
        {
            ClientScriptManager cs = validator.Page.ClientScript;
            cs.RegisterClientScriptResource(typeof(IHighlightable), "UserControls.HighlightValidators.HighlightClientValidation.js");

            Control control = validator.Parent.FindControl(validator.ControlToValidate);
            if (control != null)
            {
                if (!cs.IsClientScriptBlockRegistered(validator.GetType(), String.Format("HighlightValidation_{0}", validator.ClientID)))
                {
                    cs.RegisterClientScriptBlock(validator.GetType(), String.Format("HighlightValidation_{0}", validator.ClientID), String.Format("Page_HighlightValidators.push(new Array('{0}', '{1}', '{2}', '{3}'));", validator.ClientID, control.ClientID, ((IHighlightable)validator).ErrorCssClass, ((IHighlightable)validator).ErrorClientFunction), true);
                }
            }
        }

        public static void OnPreRender(BaseValidator validator)
        {
            WebControl control = (WebControl)validator.Parent.FindControl(validator.ControlToValidate);
            if (control != null)
            {
                ClassNameHelper.Remove(control, ((IHighlightable)validator).ErrorCssClass);
                if (!validator.IsValid)
                {
                    ClassNameHelper.Add(control, ((IHighlightable)validator).ErrorCssClass);
                    control.ToolTip = validator.ToolTip;
                }
            }
        }
    }
}