head.js with asp.net masterpage throwing HTML Parsing Error

Im trying to use head.js to load the javascript files in my asp.net page that uses a masterpage (and usercontrols) to ensure they are more self-contained.

but i am getting this error "HTML Parsing Error:Unable to modify the parent container element before the child element is closed" when the page loaded up.

the head.js is referenced in the master page

and basically i have the following script in one of the one contentholder in the actual aspx page.

<script type="text/javascript">

    head.js("http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jq开发者_如何转开发uery.js", function() {

        alert('load done');

    });

</script>

any suggestions?