function initRollOvers() {
	if (!document.getElementById){
		return;
	}
	
	var preLoads = new Array();
	var allImages = document.getElementsByTagName('img');

	for (var i = 0; i < allImages.length; i++) {		
		if (allImages[i].className == 'rollover') {
			var src = allImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var oSrc = src.replace(ftype, '_over'+ftype);

			//-- スワップ元、スワップ先画像の登録
			allImages[i].setAttribute('pSrc', src);
			allImages[i].setAttribute('oSrc', oSrc);

			//-- イメージのプリロード
			preLoads[i] = new Image();
			preLoads[i].src = oSrc;

			//-- イベントの設定
			allImages[i].onmouseover = function() {
				this.setAttribute('src', this.getAttribute('oSrc'));
			}
			allImages[i].onmouseout = function() {
				this.setAttribute('src', this.getAttribute('pSrc'));
			}
		}
	}
}

window.onload = initRollOvers;



function doSearch() {
	var formObj = document.forms["formSearch"];
	var val = formObj.search.value;
	if (val != "") formObj.submit();
	else alert("検索する単語を入力してください。");
	return false;
}

JumpLeftImg = new Array();
		JumpLeftImg[0] = "tone/index.html";
		JumpLeftImg[1] = "tone/index.html";
		JumpLeftImg[2] = "tone/index.html";
		JumpLeftImg[3] = "tone/index.html";
		JumpLeftImg[4] = "tone/index.htmll";
		JumpLeftImg[5] = "tone/index.html";
		JumpLeftImg[6] = "tone/index.html";
		JumpLeftImg[7] = "tone/index.html";
		JumpLeftImg[8] = "tone/index.html";
		JumpLeftImg[9] = "tone/index.html";
		JumpLeftImg[10] = "tone/index.html";
		JumpLeftImg[11] = "tone/index.html";


	ChangeLeftImg = new Array();
		ChangeLeftImg[0] = "images/img_main01.jpg";
		ChangeLeftImg[1] = "images/img_main02.jpg";
		ChangeLeftImg[2] = "images/img_main03.jpg";
		ChangeLeftImg[3] = "images/img_main04.jpg";
		ChangeLeftImg[4] = "images/img_main05.jpg";
		ChangeLeftImg[5] = "images/img_main06.jpg";
		ChangeLeftImg[6] = "images/img_main07.jpg";
		ChangeLeftImg[7] = "images/img_main08.jpg";
		ChangeLeftImg[8] = "images/img_main09.jpg";
		ChangeLeftImg[9] = "images/img_main10.jpg";
		ChangeLeftImg[10] = "images/img_main11.jpg";
		ChangeLeftImg[11] = "images/img_main12.jpg";


function RandomImg01() {
	var i = 0;
	i = Math.round(Math.random() * (JumpLeftImg.length - 1));
	
	document.write('<a href="'+JumpLeftImg[i]+'"><img src="'+ChangeLeftImg[i]+'" alt="maingraphic" border="0"></a>');
}