Web自定义控件FlashLabel

using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
namespace Hover.WebControls
{

    /// FlashLabel 的摘要说明。
    /// Description:文字闪烁的Label控件
    /// WebSite:IT动力营 Http://ITHero.NET 
    /// Author:翱翔.Net(Hover)
    /// Email:zytp@163.com
    /// MSN:Zytp@MSN.Com
    /// Blog:Http://CnBlogs.Com/Hover
    /// </summary>
    [DefaultProperty("Text"), 
    ToolboxData("<{0}:FlashLabel runat=server ></{0}:FlashLabel>")]
    public class FlashLabel : System.Web.UI.WebControls.Label
{
        private int flashSpeed=100;
        [Bindable(true), 
        Category("Appearance"), 
        DefaultValue(""),
        Description("文字闪烁速度!")] 
            
        public int FlashSpeed
{
            get
{
                return flashSpeed;
            }

            set
{
                flashSpeed=value;
            }
        }
        

 
        /// 将此控件呈现给指定的输出参数。
        /// </summary>
        /// <param name="output"> 要写出到的 HTML 编写器 </param>
        protected override void Render(HtmlTextWriter output)
{
            string s;
            string scriptString="<script language=JavaScript> \n";
            scriptString+="function glowit(which){ \n"; 
            scriptString+="if (document.all.glowtext.filters[0].strength==2) \n ";
            scriptString+="document.all.glowtext.filters[0].strength=1 \n";
            scriptString+="else  \n";
            scriptString+="document.all.glowtext.filters[0].strength=2 } \n";
            scriptString+="function startglowing(){ \n";
            scriptString+="var fp='"+this.FlashSpeed+"'; \n";
            scriptString+=@"setInterval(""glowit(0)"",fp)}";            
            scriptString+=" \n window.onload=startglowing \n";
            scriptString+="</script>";
);
            output.Write(scriptString);
            output.Write(s);
        }
    }
}