ShowModalDialog() dopesnt support URL Anchors?

[itc_sburnett]

I am trying to build a simple help system. I cant seem to get the
ShowModalDialog to actually jump to the correct location.

Why doesn't the following open the page to correct position?
function JScriptHelpClick() {
window.showModalDialog('Requirement_Help.aspx#Prod uct',null,'status:no;dial*
ogWidth:
370px;dialogHeight:220px;dialogHide:true;help:no;s croll:no');
}
In the Requirement_Help.aspx page I have:
<h3><a name="Product">Product</a></h3>
<p>Select the product this requirement is intended to test.&nbsp; The
choices
are:</p>
I cant see why it wouldn't be supported....