if (document.images) {
	img1on = new Image();
	img1on.src = "img/menu_1_r.jpg";
	img1off = new Image();
	img1off.src = "img/menu_1.jpg";
	img2on = new Image();
	img2on.src = "img/menu_2_r.jpg";
	img2off = new Image();
	img2off.src = "img/menu_2.jpg";
	img3on = new Image();
	img3on.src = "img/menu_3_r.jpg";
	img3off = new Image();
	img3off.src = "img/menu_3.jpg";
	img4on = new Image();
	img4on.src = "img/menu_4_r.jpg";
	img4off = new Image();
	img4off.src = "img/menu_4.jpg";
	img5on = new Image();
	img5on.src = "img/menu_5_r.jpg";
	img5off = new Image();
	img5off.src = "img/menu_5.jpg";
	img6on = new Image();
	img6on.src = "img/menu_6_r.jpg";
	img6off = new Image();
	img6off.src = "img/menu_6.jpg";
	img7on = new Image();
	img7on.src = "img/menu_7_r.jpg";
	img7off = new Image();
	img7off.src = "img/menu_7.jpg";
	img8on = new Image();
	img8on.src = "img/menu_8_r.jpg";
	img8off = new Image();
	img8off.src = "img/menu_8.jpg";
	img9on = new Image();
	img9on.src = "img/menu_9_r.jpg";
	img9off = new Image();
	img9off.src = "img/menu_9.jpg";
	img10on = new Image();
	img10on.src = "img/btn_1_r.gif";
	img10off = new Image();
	img10off.src = "img/btn_1.gif";
	img11on = new Image();
	img11on.src = "img/btn_2_r.gif";
	img11off = new Image();
	img11off.src = "img/btn_2.gif";
	img12on = new Image();
	img12on.src = "img/btn_3_r.gif";
	img12off = new Image();
	img12off.src = "img/btn_3.gif";
	img13on = new Image();
	img13on.src = "img/btn_4_r.gif";
	img13off = new Image();
	img13off.src = "img/btn_4.gif";
}
function imgOn(imgName) {
	if (document.images) {
		document[imgName].src=eval(imgName+"on.src");
	}
}
function imgOff(imgName) {
	if (document.images) {
		document[imgName].src=eval(imgName+"off.src");
	}
}