Please HELP

I have been trying for ages to get a fix size pop up php or html page to work from a click the link on my website (word press)

I have some code that should display an iframe fix size 425 x 245.

How do i link to this code from a page

what is happening to me now is if i try to open this page the code displays and not the actual pop page it shows the code (i know i am not executing the script

All i am trying to do is get this pop to stay active after it is activated and the user continues normal browsing

The code is here i have nt got this to work so i can only guess its correct

I have no code knowledge How do i link to this page to get this to work from a word press page the pop up must be independent to the word press site.

<script language="JavaScript" type="text/javascript">
function makeFrame() {
* *ifrm = document.createElement("IFRAME");
* *ifrm.setAttribute("src", "");
* * = 452+"px";
* * = 245+"px";
* *document.body.appendChild(ifrm);
<p><a href="#" onMouseDown="makeFrame()">GO! </a></p>