//ハイライト
function highlightpage(){
	if(!document.getElementsByTagName) return false;
	if(!document.getElementById) return false;

	if(!document.getElementById("menu")) return false;
	var nav = document.getElementById("menu");
	var links = nav.getElementsByTagName("a");
	for(var i=0; i<links.length; i++){
		var linkurl = links[i].getAttribute("href");
		var currenturl = window.location.href;
		if(currenturl.indexOf(linkurl) != -1){
			var linkimages = links[i].getElementsByTagName("img")[0]
			var src_replace = linkimages.getAttribute("src").replace("_off.", "_on.");
			linkimages.setAttribute("src",src_replace);
		}
	}

	if(!document.getElementById("menu2")) return false;
	var nav2 = document.getElementById("menu2");
	var links2 = nav2.getElementsByTagName("a");
	for(var i=0; i<links2.length; i++){
		var linkurl2 = links2[i].getAttribute("href");
		var currenturl2 = window.location.href;
		if(currenturl2.indexOf(linkurl2) != -1){
			var linkimages2 = links2[i].getElementsByTagName("img")[0]
			var src_replace2 = linkimages2.getAttribute("src").replace("_off.", "_on.");
			linkimages2.setAttribute("src",src_replace2);
		}
	}
	rollover();
}

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

function rollover(){
	var over = function() { this.src = this.src.replace('_off.', '_on.'); };
	var out  = function() { this.src = this.src.replace('_on.', '_off.'); };
	var img = document.getElementsByTagName('img');
	for (var i = 0, l = img.length; i < l; i++) {
		if (!img[i].src.match(/_off\./)) continue;
		img[i].onmouseover = over;
		img[i].onmouseout  = out;
	}
}

//ページトップへ
function slowdownScroll() {
if(navigator.appName == "Microsoft Internet Explorer" && document.compatMode == "CSS1Compat") {
sctop = document.body.parentNode.scrollTop;
}
else if(window.pageYOffset){
sctop = window.pageYOffset;
} else {
sctop = document.body.scrollTop;
}

if(sctop){
scup = Math.ceil(sctop*.2);
scrollBy(0,-scup);
if (sctop-scup) setTimeout("slowdownScroll()",10);
}
}


//SWAPIMAGE
function mouseover(id, src) {
	var target = document.getElementById(id);
	target.src = src;
}