//////////////////// ロールオーバー
function rollover() {
	if(document.getElementsByTagName) {
		var images = document.getElementsByTagName('img');

		for(var i=0; i < images.length; i++) {
			if(images[i].getAttribute('src').match('_swap.'))
			{
				images[i].onmouseover = function() {
					this.setAttribute('src', this.getAttribute('src').replace('_swap.', '_swap_f2.'));
				}
				images[i].onmouseout = function() {
					this.setAttribute('src', this.getAttribute('src').replace('_swap_f2.', '_swap.'));
				}
			}
		}
	}
}

if(window.addEventListener) {
	window.addEventListener('load', rollover, false);
}
else if(window.attachEvent) {
	window.attachEvent('onload', rollover);
}