$(function(){
	i = 0;
	images = ['images/graphic0.jpg', 'images/graphic1.jpg', 'images/graphic2.jpg', 'images/graphic3.jpg'];
	cache = [];
	setInterval('swap()', 8000);
});

function swap() {
	i++;
	if (i > 3) i = 0;
	if (! cache[i]) {
		cache[i] = new Image();
		cache[i].src = images[i];
	}
	if (cache[i].complete) {
		$('#content img').attr('src', cache[i].src);
	} else {
		cache[i].onload = function() {
			$('#content img').attr('src', cache[i].src);
		}
	}
	
}