$(function(){
	$('img.roll').bind('mouseover', function(){
		this.src = this.src.replace(/(.*)\.(jpg|gif|png)$/i, "$1-on.$2");
	});
	$('img.roll').bind('mouseout', function(){
		this.src = this.src.replace(/(.*)-on\.(jpg|gif|png)$/i, "$1.$2");
	});
	
	// Slideshows
	var duration = 3000;
	var speed = 1500;
	var i = 0;
	var n = $('#slides li').length;
	if (n > 1) {
		setInterval(function() {
			nextIndex = i + 1;
			if (i == (n - 1)) nextIndex = 0;
			$('#slides li').eq(i).fadeOut(speed);
			$('#slides li').eq(nextIndex).fadeIn(speed);
			i++;
			if (i == n) i = 0;
		}, duration);
	}				
});