window.addEvent('domready', function(){

    $$('.category').addEvent ('mouseover', function(o) {

		this.removeClass('categoryOff');
		this.addClass('categoryOn');

    });

    $$('.category').addEvent ('mouseout', function() {

		this.removeClass('categoryOn');
		this.addClass('categoryOff');

    });

    $$('.article').addEvent ('mouseover', function(o) {

		this.removeClass('articleOff');
		this.addClass('articleOn');

    });

    $$('.article').addEvent ('mouseout', function() {

		this.removeClass('articleOn');
		this.addClass('articleOff');

    });


	if ($('prev'))
	{ 
		$('prev').addEvent ('mouseover', function() {
			$('imgPrev').src = $('imgPrev').src.replace('off', 'on');
			$('lnkPrev').addClass ('on');
		});

		$('prev').addEvent ('mouseout', function() {
			$('imgPrev').src = $('imgPrev').src.replace('on', 'off');
			$('lnkPrev').removeClass ('on');
		});
	}
	
	if ($('next'))
	{ 
		$('next').addEvent ('mouseover', function() {
			$('imgNext').src = $('imgNext').src.replace('off', 'on');
			$('lnkNext').addClass ('on');
		});

		$('next').addEvent ('mouseout', function() {
			$('imgNext').src = $('imgNext').src.replace('on', 'off');
			$('lnkNext').removeClass ('on');
		});
	}
});