//ロールオーバー
var SwImg; SwImg = new Array;

ImgPreload('btn1', 'images/btn/btn_01.jpg', 'images/btn/btn2_01.jpg');
ImgPreload('btn2', 'images/btn/btn_02.jpg', 'images/btn/btn2_02.jpg');
ImgPreload('btn3', 'images/btn/btn_03.jpg', 'images/btn/btn2_03.jpg');
ImgPreload('btn4', 'images/btn/btn_04.jpg', 'images/btn/btn2_04.jpg');
ImgPreload('btn5', 'images/btn/btn_05.jpg', 'images/btn/btn2_05.jpg');
ImgPreload('btn6', 'images/btn/btn_06.jpg', 'images/btn/btn2_06.jpg');
ImgPreload('btn7', 'images/btn/btn_07.jpg', 'images/btn/btn2_07.jpg');

ImgPreload('menu1', 'images/side/side_btn01.gif', 'images/side/side2_btn01.gif');
ImgPreload('menu2', 'images/side/side_btn02.gif', 'images/side/side2_btn02.gif');
ImgPreload('menu3', 'images/side/side_btn03.gif', 'images/side/side2_btn03.gif');
ImgPreload('menu4', 'images/side/side_btn04.gif', 'images/side/side2_btn04.gif');
ImgPreload('menu5', 'images/side/side_btn05.gif', 'images/side/side2_btn05.gif');
ImgPreload('menu6', 'images/side/side_btn06.gif', 'images/side/side2_btn06.gif');
ImgPreload('menu7', 'images/side/side_btn07.gif', 'images/side/side2_btn07.gif');
ImgPreload('menu8', 'images/side/side_btn08.gif', 'images/side/side2_btn08.gif');
ImgPreload('menu9', 'images/side/side_btn09.gif', 'images/side/side2_btn09.gif');
ImgPreload('menu10', 'images/side/side_btn10.gif', 'images/side/side2_btn10.gif');
ImgPreload('menu11', 'images/side/side_btn11.gif', 'images/side/side2_btn11.gif');
ImgPreload('menu12', 'images/side/side_btn12.gif', 'images/side/side2_btn12.gif');
ImgPreload('menu13', 'images/side/side_btn13.gif', 'images/side/side2_btn13.gif');
ImgPreload('menu14', 'images/side/side_btn14.gif', 'images/side/side2_btn14.gif');
ImgPreload('menu15', 'images/side/side_btn15.gif', 'images/side/side2_btn15.gif');
ImgPreload('menu16', 'images/side/side_btn16.gif', 'images/side/side2_btn16.gif');
ImgPreload('menu17', 'images/side/side_btn17.gif', 'images/side/side2_btn17.gif');
ImgPreload('menu18', 'images/side/side_btn18.gif', 'images/side/side2_btn18.gif');


function ImgPreload() {
	var N = ImgPreload.arguments[0];
	SwImg[N] = new Image();
	SwImg[N][0] = new Image();
	SwImg[N][0].src = ImgPreload.arguments[1];
	SwImg[N][1] = new Image();
	SwImg[N][1].src = ImgPreload.arguments[2];
}

function ImgChenge() {
	var ID = ImgChenge.arguments[0];
	var N  = ImgChenge.arguments[1];
	document.images[ID].src = SwImg[ID][N].src;
}