var imgNames = new Array(
	'/images/home/visual_01.jpg',
	'/images/home/visual_02.jpg',
	'/images/home/visual_04.jpg'
);

var imgObjs = new Array();

for (i=0; i<imgNames.length; i++) {
	imgObjs[i] = new Image();
	imgObjs[i].src = imgNames[i];
}

var current = 1;

function toggleImages() {
	if (document.getElementById('MAIN_VISUAL')) {
		setInterval( function() {
			document.getElementById('MAIN_VISUAL').setAttribute('src', imgObjs[current].src);
			if (imgObjs[current+1]) {
				current++;
			} else {
				current = 0;
			}
		}, 5000 );
	}
}

window.onload = toggleImages;