<script type="text/javascript">window.onload = function PlsReg() {openLayerB('PlsReg',0,'/PlsReg.xml','Внимание',335,300,1,0,0);}</script>
В head ставим
Код:<?if(!$USER_LOGGED_IN$)?>
<script type="text/javascript">
window.onload = function PlsReg() {openLayerB('PlsReg',0,'/PlsReg.xml','Внимание',335,300,1,0,0);}
</script>
<?endif?>