I am having some issues that I need some help with.

I have a page with a field set on it that is part of a repeat tag. I want the look up field to auto populate with the users first and last name. I have found a way to populate the look up but it can't be part of the repeat tag. I am not sure what the problem is. 

Visualforce code:

<apex:page standardController="Account" showHeader="false">
 <script type="text/javascript" charset="utf-8" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>  
 <script type="text/javascript" charset="utf-8" src="http://code.jquery.com/mobile/1.0b3/jquery.mobile-1.0b3.min.js"></script>
  <apex:form id="AccountForm">
      <apex:pageBlock id="AccountBlock">
      <apex:pageBlockSection id="AccountSection">
          <apex:inputField id="Contact" value="{!Account.Contact_Test__c}" rendered="true"/>
          <apex:repeat id="FieldList" value="{!$ObjectType.Account.FieldSets.test}" var="set">
              <apex:inputField id="ContactLookup" value="{!Account[set]}" rendered="{!CONTAINS(LOWER(set), LOWER('Contact_Test__c'))}"/>
              <apex:inputField value="{!Account[set]}" rendered="{!NOT(CONTAINS(LOWER(set), LOWER('Contact_Test__c')))}"/>
          </apex:repeat>
      </apex:pageBlockSection>
      </apex:pageBlock>
  </apex:form>
<script type="text/javascript">
  try
  {
    var form = document.getElementsByTagName("FORM");
    var formid= '#' + form[0].id.replace(/:/g, "\\:");
    $(formid+"\\:AccountBlock\\:AccountSection\\:Contact").val('{!$User.FirstName} {!$User.LastName}');
  }
  catch(err)
  {
    alert(err);
  }
</script>
</apex:page>