I don't know if you can make your page do this as soon as it come up, but you can hide the window bar and the standard buttons within a popup
This in your head:
<script language="javascript" type="text/javascript">
var win=null;
function NewWindow(mypage,myname,w,h,scroll,pos)
{
if(pos=="random")
{
LeftPosition=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;
TopPosition=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;
}
if(pos=="center")
{
LeftPosition=(screen.width)?(screen.width-w)/2:100;
TopPosition=(screen.height)?(screen.height-h)/2:100;
}
else if((pos!="center" && pos!="random") || pos==null)
{
LeftPosition=0;
TopPosition=20
}
settings='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no';
win=window.open(mypage,myname,settings);
}
// -->
</script>
This in your body:
<a href="http://www.mydomain.com" onclick="NewWindow(this.href,'newwindow','450','750','yes','center');return false" onfocus="this.blur()">YourLinkText</a>