Also if you want to change some parameters for the popup window, you can use this code.
code:
<a href="page.html" target="I1"
onClick="window.open('2.html','popup','width=200,height=300,toolbar=no,location=no,directories=no,status=no,menubar=no,
scrollbars=no,resizable=no,minimize=no,maximize=no,fullscreen=no,dependent=no,top=400,left=400')"> text</a>
Change the values of the parameters as you wish.
I split the code at scrollbars=no so that it fits the layout of this page better, but make sure there are no spaces between the properties of the window in your code.