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<head>
    <script language="javascript">
        function overlay() {
            xyz = document.getElementById("overlay");
            xyz.style.visibility = (xyz.style.visibility == "visible") ? "hidden" : "visible";
        }
    </script>
    <style type="text/css">
        #overlay {
             visibility: hidden;
             position: absolute;
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var checkInfo = function(objname){
 var cobjarr;
 var pobjarr;
 var operate = '_';   //IDÁ¬½Ó·û
 if ( typeof($('#'+objname+operate+'1').attr('id')) !== 'undefined' ){
  cobjarr = $('input[id^='+objname+operate+']');
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<html xmlns="http://www.w3.org/1999/xhtml" >
<head >
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    <div>
                         <ul>
                       <li><input type='radio' name="radio_113"  value="1" />White</li>
                       <li><input type='radio' name="radio_113"  value="2" />Black, African American, or Negro</li>
       &n ......
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