if (document.images) {
	// 読込
	var img1on = new Image();
	img1on.src = "images/tab_link_home_up.jpg";
	var img1off = new Image();
	img1off.src = "images/tab_link_home.jpg";
	var img2on = new Image();
	img2on.src = "images/tab_link_comp_up.jpg";
	var img2off = new Image();
	img2off.src = "images/tab_link_comp.jpg";
	var img3on = new Image();
	img3on.src = "images/tab_link_work_up.jpg";
	var img3off = new Image();
	img3off.src = "images/tab_link_work.jpg";
	var img4on = new Image();
	img4on.src = "images/tab_link_recruit_up.jpg";
	var img4off = new Image();
	img4off.src = "images/tab_link_recruit.jpg";
	var img5on = new Image();
	img5on.src = "images/tab_link_cam_up.jpg";
	var img5off = new Image();
	img5off.src = "images/tab_link_cam.jpg";
	var img6on = new Image();
	img6on.src = "images/tab_link_contact_up.jpg";
	var img6off = new Image();
	img6off.src = "images/tab_link_contact.jpg";
	// 設定終了
}

// onMouseOver
function On(name) {
	if (document.images) {
		document.images[name].src = eval(name + 'on.src');
	}
}

// onMouseOut
function Off(name) {
	if (document.images) {
		document.images[name].src = eval(name + 'off.src');
	}
}