var SwImg; SwImg = new Array;

ImgPreload('image1', 'images/img_btn/btn_news01.gif', 'images/img_btn/btn_news02.gif');
ImgPreload('image2', 'images/img_btn/btn_info01.gif', 'images/img_btn/btn_info02.gif');
ImgPreload('image3', 'images/img_btn/btn_1up01.gif', 'images/img_btn/btn_1up02.gif');
ImgPreload('image4', 'images/img_btn/btn_stock01.gif', 'images/img_btn/btn_stock02.gif');
ImgPreload('image5', 'images/img_btn/btn_mainte01.gif', 'images/img_btn/btn_mainte02.gif');
ImgPreload('image6', 'images/img_btn/btn_blog01.gif', 'images/img_btn/btn_blog02.gif');
ImgPreload('image7', 'images/img_btn/btn_media01.gif', 'images/img_btn/btn_media02.gif');
ImgPreload('image8', 'images/img_btn/btn_link01.gif', 'images/img_btn/btn_link02.gif');
ImgPreload('image9', 'images/img_btn/btn_prof01.gif', 'images/img_btn/btn_prof02.gif');
ImgPreload('image10', 'images/img_btn/btn_map01.gif', 'images/img_btn/btn_map02.gif');
ImgPreload('image11', 'images/img_btn/btn_cont01.gif', 'images/img_btn/btn_cont02.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;
}