//ロールオーバーのスクリプト
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);
}




//基礎知識編用
var image = new Array();
for( i = 0 ; i < 5 ; i++ ){
	image[i] = new Image();
}
image[0].src= "../images/knowledge/index/topnavi.jpg";
image[1].src= "../images/knowledge/index/topnavi_page1.jpg";
image[2].src= "../images/knowledge/index/topnavi_page2.jpg";
image[3].src= "../images/knowledge/index/topnavi_page3.jpg";
image[4].src= "../images/knowledge/index/topnavi_page4.jpg";


function swapImg(i){
	document.images["mainIMAGE"].src=image[i].src;
}



//コピーライトの西暦計算
function CopyYear() {
	var myDate = new Date();
	var myYear = myDate.getFullYear();
	document.write(myYear);
}