var chatWindow = null;


function ShowChatWindow()
{

    if (chatWindow != null)
    {
        try
        {
            chatWindow.close();
        }
        catch(ex)
        {
        }
    }
               

    chatWindow = popwindow('../IM/chat.htm','Chat','height=530,width=700,scrollbars=no');
    
    return false;

}