simple mootools accordion with hover effect

[ktsixit]

Hi all,
I'm trying to customize the mootools accordion demo (http://demos.mootools.net/Accordion). I'm trying to add a mouseover effect on the togglers. I'd like them to change their background color on mouse over. Could you help me a little?

This is the javascript code:

 window.addEvent('domready', function() {
	
	//create our Accordion instance
	var myAccordion = new Accordion($('accordion'), 'div.toggler', 'div.element', {
		opacity: false,
		onActive: function(toggler, element){
			toggler.setStyle('color', '#41464D');
		},
		onBackground: function(toggler, element){
			toggler.setStyle('color', '#528CE0');
		}
	});
});

I tried to add something like:

$('div.toggler').addEvent('mouseover', function(){
 			toggler.setStyle('background-color', '#000000');
 	});

but didn't work