function checktopAds() 
{    
   
   return true;   
} 

function do_it() 
{ 
  if ( checktopAds() ) 
  { 
  var anim = function() 
    { 
      n += 50; 
        if(n >= 500){ 
        document.getElementById('topAds_chk_show').style.marginTop = "0"; 
        window.clearInterval(t1); 
        }else{ 
        document.getElementById('topAds_chk_show').style.marginTop = "-"+(45 - n)+"px"; 
        } 
      },n=0; 
      var t1 = window.setInterval(anim,10); 
    } 
} 

function close_chk_show() 
{ 

  var anim = function() 
  { 
    n += 5; 
    if(n >= 310){ 
    document.getElementById('topAds_chk_show').style.marginTop = "-310px"; 
    window.clearInterval(t1); 
    }else{ 
    document.getElementById('topAds_chk_show').style.marginTop = "-"+ n +"px"; 
    } 
  },n=0; 

    var t1 = window.setInterval(anim,10); 
}
function setAdTime(second){
setTimeout("close_chk_show() ",second*1000);
}