Popups em Joomla 1.5 usando Mootools

Utiliza este script dentro das tags header do seu template

<?php JHTML::_( 'behavior.modal' ); ?>
<script>
SqueezeBox.loadModal = function(modalUrl,handler,x,y) {
       this.initialize();    

       var options = $merge(options || {}, Json.evaluate("{handler: '" + handler + "', size: {x: " + x +", y: " + y + "}}"));    

       this.setOptions(this.presets, options);
       this.assignOptions();
       this.setContent(handler,modalUrl);

   };
 
 
   window.addEvent('domready', function() {
         SqueezeBox.loadModal('http://www.eniomarcelo.com.br','iframe',100,100);
 });
</script>