/*

	http://css-happylife.com/log/javascript/000157.shtml
	画像名に_off.とついている画像にマウスオンすると_on.に変更される

*/

function smartRollover() {
	if(document.getElementsByTagName) {
		var images = document.getElementsByTagName("img");

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

if(window.addEventListener) {
	window.addEventListener("load", smartRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", smartRollover);
}

/*スクロール*/

var scrj = 1;
function softScrollBack() {
if(navigator.appName == "Microsoft Internet Explorer" && document.compatMode == "CSS1Compat") {
var scdist = document.body.parentNode.scrollTop;
} else {
var scdist = document.body.scrollTop;
}
if(scrj<50 && scdist) {
scdist = (scdist>2) ? Math.ceil(scdist*.2) : 1;
scrj++;
scrollBy(0,-scdist);
setTimeout("softScrollBack()",20);
} else {
scrollTo(0,0);
scrj = 1;
}
}