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=500,left=25,top=50,resizable=yes,scrollbars=yes');

return false;

}