Use this javascript code. Hope it helps you.
var mylocation="page_name"
var winheight=100
var winsize=100
var x=5
var newwindow = '';
var url = "page_name"
function popitup()
{
document.getElementById("smt").style.display='none';
if (!newwindow.closed && newwindow.location)
{ newwindow.location.href = url; }
else
{
newwindow=window.open(url,'','toolbar=no,location=no,menubar=no,scrollbars=yes');
if (!newwindow.opener) newwindow.opener = self;
}
if (window.focus)
{
newwindow.focus()
newwindow.moveTo(0,0)
newwindow.resizeTo(screen.availWidth, screen.availHeight)
window.opener=""
window.close(0);
}
return false;
}