<script type="text/javascript">  
if(localStorage.getItem('guestName')) {  
$('[id^="frmLg"] [name="user"]').val(localStorage.getItem('guestName'))  
}  
$('[id^="frmLg"]').submit(function() {  
if(localStorage.getItem('guestName')) {  
if(localStorage.getItem('guestName') == $(this).find('[name="user"]').val()) {return false;}  
}  
localStorage.setItem('guestName',$(this).find('[name="user"]').val());  
});  
</script>