WebHelp OnClick Javascript problem

Thanks,

It doesn't work at all with that hehe

It's a bit annoying basically I've found some javascript that should in theory allow me to let a user submit feedback and it will send the title of the page they are viewing. This is how its meant to work:

<head>
<script type="text/javascript">
function getFileName() {
//this gets the full url
var url = document.location.href;
//this removes the anchor at the end, if there is one
url = url.substring(0, (url.indexOf("#") == -1) ? url.length : url.indexOf("#"));
//this removes the query after the file name, if there is one
url = url.substring(0, (url.indexOf("?") == -1) ? url.length : url.indexOf("?"));
//this removes everything before the last slash in the path
url = url.substring(url.lastIndexOf("/") + 1, url.length);
//return
return url;
}

function EmailLink()

{
topictitle=getFileName();
document.write(topictitle);
window.location = "mailto:documentation@blah.com "+" ?subject= Re: Web Analytics help - "+ topictitle;"sometitle"
}

</script>
</head>

<FORM>
<a href = "E-mail" onClick="EmailLink()">Email </a>
</FORM>

So it works fine from within a web browser...but for some reason - it won't work from within webhelp when it's embedded into my master page