function chgImg(myNum, myName) { document[myName].src = img[myNum].src;}
imgsrc = new Array();
imgsrc[0] = "pic/menu2_on.jpg";
imgsrc[1] = "pic/menu2_off.jpg";
imgsrc[2] = "pic/menu3_on.jpg";
imgsrc[3] = "pic/menu3_off.jpg";
imgsrc[4] = "pic/menu4_on.jpg";
imgsrc[5] = "pic/menu4_off.jpg";
imgsrc[6] = "pic/menu5_on.jpg";
imgsrc[7] = "pic/menu5_off.jpg";
imgsrc[8] = "pic/menu6_on.jpg";
imgsrc[9] = "pic/menu6_off.jpg";
imgsrc[10] = "pic/menu7_on.jpg";
imgsrc[11] = "pic/menu7_off.jpg";
imgsrc[12] = "pic/menu8_on.jpg";
imgsrc[13] = "pic/menu8_off.jpg";
imgsrc[14] = "pic/menu9_on.jpg";
imgsrc[15] = "pic/menu9_off.jpg";
imgsrc[16] = "pic/menu10_on.jpg";
imgsrc[17] = "pic/menu10_off.jpg";
imgsrc[18] = "pic/menu12_on.jpg";
imgsrc[19] = "pic/menu12_off.jpg";

img = new Array();
for (i = 0; i < imgsrc.length; i++){
			img[i] = new Image();
			img[i].src = imgsrc[i];}