Just to break down the code for you..
<html>
// tells browser what it is about to view is Javascript
<script language="javascript">
// Use the function/event onclick with no return
function onClick(){
// opens a new window , www.YOURSITE.com, place it on top
window.open("http://www.YOURSITE.com", "_top");
// closes the function
}
// closes the script
</script>
//to put in your body tags
<body>
// create a link that does the javascript function onClick and name //the link LINK1
<A href="javascript

nClick()">LINK1</A>
// the font onclick I do not know. maybe sma can tell me what it does??
<font onclick="javascript

nClick()">LINK2</font>
</body>
</html>