Asp.Net Message Box

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Collections;
using System.Text;

///
/// Summary description for MessageBox
///
/// Done by RENJU.R
/// You are licenced to distribute the code
/// http://www.renjucool.co.nr

public class MessageBox
{

private static Hashtable m_executingPages = new Hashtable();
private MessageBox() { }
public static void Show(string sMessage)
{
if (!m_executingPages.Contains(HttpContext.Current.Handler))
{
Page executingPage = HttpContext.Current.Handler as Page;
if (executingPage != null)
{
Queue messageQueue = new Queue();
messageQueue.Enqueue(sMessage);
m_executingPages.Add(HttpContext.Current.Handler, messageQueue);
executingPage.Unload += new EventHandler(ExecutingPage_Unload);
}
}
else
{
Queue queue = (Queue)m_executingPages[HttpContext.Current.Handler];
queue.Enqueue(sMessage);
}
}

private static void ExecutingPage_Unload(object sender, EventArgs e)
{
Queue queue = (Queue)m_executingPages[HttpContext.Current.Handler];
if (queue != null)
{
StringBuilder sb = new StringBuilder();
int iMsgCount = queue.Count;
sb.Append("");
m_executingPages.Remove(HttpContext.Current.Handler);
HttpContext.Current.Response.Write(sb.ToString());

}
}

}