You can do this task with following way.
1. Create one test.js file and in js file write following content.
function openFlashWin() {
window.open( 'index.html','careers','width=768,height=500');
}
2. Now create jsp file and in jsp file write following content.
<html>
<HEAD><SCRIPT SRC="test.js"></SCRIPT></HEAD>
<P><a href="javascript:openFlashWin()">About As.</a></P>
</html>