var set_t;
function showBanner(emid)
{
if(set_t !="" || set_t !="undefined")
    clearTimeout (set_t );
    var obj=document.getElementById(emid);
    for(var i=1; i<6; i++)
    {
        document.getElementById("dhBannerList"+i).style.display = "none";
    }
    obj.style.display = "block";
    set_t= setTimeout("clearBanner()",5000);
}
function clearBanner()
{
    for(var i=1; i<6; i++)
    {
        document.getElementById("dhBannerList"+i).style.display = "none";
    }
}