Hey, were you able to get this to work for you? Just got mine to work.
<script language="javascript">
$(document).ready(function() {
document.getElementById("ctl05_ctl00_btnSearch").click();
// OR
$("#ctl05_ctl00_btnSearch")[0].click();
});
</script>
Copied the ServingOppSearch.ascx and created a new module (put in the custom directory under webcontrols) and added this script to the top of the module before <%@control ..... Created a new page for the filtered results.
To filter the results for the Serving Opportunities page, I created a new page. Added the new ServingOppSearch module. In the settings for that module you can add a Content Category. These are managed in the Lookup Type "Content Categories". Then on any Serving Tag you would want matched with that Category, select the appropriate checkbox. These are midway down the Serving Tag Detail page after between Classification and Duration. Please note, these are different from Category Level. Those are used by the drop down lists.
Hope this helps.