Use anchor to pop up window

Using an anchor to pop-up a window with JavaScript

Anchor tag:
<a href="javascript:popWindow('http://www.google.com');">Pop Window</a>

JavaScript:
<script type="text/javascript">
   function popWindow(hrefTarget) { 
   // Pop up the window
     window.open(hrefTarget, "_blank", "width=463,height=500,resizable=yes");
   }</script>

Alternatively, returning a false will prevent the anchor from linking:
<a href='www.google.com' onclick='FunctionCall(); return false;'>Pop Window</a>