<script type="text/javascript">
{ var selectedReq = ""; var objChb=document.form1.elements['chk']; var count=0; var url; if(objChb.length > 0) { for( i = 0; i < objChb.length; i++ ) { if ( objChb[i].checked == true ) { if ( selectedReq == "" ) { selectedReq = objChb[i].value; } else { } count = count +1; } } } else { if(document.form1.chk.checked == true) { count=1; } else { count=0; } } if(count == 5) { alert("Please select only 4 option."); return false; } } </script>
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