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=600,height=400');
return false;
}

function popup(my, windowname)
{
if (!window.focus)return true;
var href;
if (typeof(my) == 'string')
   href=my;
  else
   href=my.href;
window.open(href, windowname, 'width=600,height=500');
return false;
}