<script type="text/javascript">   
   function regClick() {$('#reg_block').show();$('#reg_rules').hide();}   
   </script>   
   <div id="reg_rules">   
   <div style="padding:20px 30px;background:#efefef">   
   Jūsu noteikumi...
   </div>   
   <div style="padding:20px 30px;background:#dae5ff"><input type="checkbox" id="rules" onclick="regClick()"><label for="rules">Es <b>piekrītu</b> portāla lietošanas noteikumiem.</label></div>   
   </div>   
   <div id="reg_block" style="display:none">$BODY$</div>

<?if($ERROR$)?><script type="text/javascript">regClick()</script><?endif?>