//rollover
function setRollover() {
	if(!(!!document.getElementsByTagName)) return false;
	var images = document.getElementsByTagName("img");
		
	for(var i=0; i < images.length; i++) {
		if(images[i].className.match("rollover")){
			images[i].onmouseover = function() {
				this.setAttribute("src", this.getAttribute("src").replace(".gif", "_on.gif"));
			}
			images[i].onmouseout = function() {
				this.setAttribute("src", this.getAttribute("src").replace("_on.gif", ".gif"));
			}
		}
	}
}


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

var menuList = ['menu_1', 'menu_2', 'menu_3'];

var imagePath = 'img/ico/';