Dropdown Menu Without Submit Button

I'm trying to make a dropdown box in Javascript that doesn't need a submit button. Easy enough, right? Well, the only difference with this one is that I want the links inside to go to a location within the same page.

But I keep getting an error in this code: Line 47 - Character 1 - Object Expected. That tells me absolutely nothing! What about you? Can you tell me what's wrong with the code?

The stuff before the HEAD tags is

Code:

<script type="text/javascript">
<!--
function goToAnchor(form) {
var f = form.anchorList;
var selectedAnchor = f.options[f.selectedIndex].value;
return location.href = selectedAnchor;
}
//-->
</script>
The stuff within the BODY tag is

Code:

<form>
<select name="anchorList" onchange="goToAnchor(this.form)">
<option value="javascript:void(0)" selected>This is a test...</option>
<option value="#link1">Link 1</option>
<option value="#link2">Link 2</option>
<option value="#link3">Link 3</option>
</select>
</form>