var adWin = null;

function openADWin(srcfile)
{ blur();
  if(adWin == null || adWin.closed)
    { adWin = open(srcfile, 'assignDataWin',
              'resizable=no,toolbar=no,top=50,left=100,width=470,height=200');
    }
  adWin.focus();
}


function isADWExist()
{ if(adWin != null && !adWin.closed) adWin.focus(); }

window.onfocus = isADWExist;