mootools accordion styling problem

Question

I just built my first mootools accordion, but it is adding a lot of inline styles which is just ruining my UI. I can set up a inline style with !important keyword but it will just make my css maintenance a nightmare. any ideas how to get rid of the inline styles

It is just this

<script language="javascript">
   window.addEvent('domready', function() {

 //create our Accordion instance
 var myAccordion = new Accordion($('accordion'), 'div.subTreeHeader', 'div.accordionElement', {
 opacity: false, fixedHeight:400

 });

});

</script>