Popup window using javascript

<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>

Copy the following where you want to generate popup link

<a href="http://www.google.com" 
onclick="NewWindow(this.href,'mywin',
'120','120','no','center');return false" 
onfocus="this.blur()">YourLinkText</a>