function _getElementByID( id ){
    if (document.getElementById){
      return document.getElementById(id);
    }
  else {
    if (document.all){
      return document.all[ id ];
    }
    else {
      if (document.layers){
        return document[ id ];
      }
    }
  }
}

function popup(mylink, windowname)
{
if (! window.focus)return true;
var href;
if (typeof(mylink) == 'string')
   href=mylink;
else
   href=mylink.href;
window.open(href, windowname, 'width=400,height=400,scrollbars=yes');
return false;
}