Open In The Same Window

I'm trying to make a popup. The code I pasted below works, but my problem
is, that I want the http://www.mypage.com to open in the same browser
window. So I need something instead of window.open(). Window.location shows
the content of http://www.mypage.com when is called like this inside the
body <script language="javascript">

window.location = http://www.mypage.com;
</script>

But when it is called in the way presented below, doesn't want to work. I
need to call the function opening the window. I don't want to have the link
in href to prevent some crawlers to follow the link. Code: