if (document.images) {
menu_sub01on = new Image(163,23);menu_sub01on.src = "images/menu_sub01_ov.gif";
menu_sub02on = new Image(163,35);menu_sub02on.src = "images/menu_sub02_ov.gif";
menu_sub03on = new Image(163,35);menu_sub03on.src = "images/menu_sub03_ov.gif";
menu_sub04on = new Image(163,23);menu_sub04on.src = "images/menu_sub04_ov.gif";
menu_sub05on = new Image(163,23);menu_sub05on.src = "images/menu_sub05_ov.gif";
menu_sub06on = new Image(163,23);menu_sub06on.src = "images/menu_sub06_ov.gif";
menu_sub07on = new Image(163,23);menu_sub07on.src = "images/menu_sub07_ov.gif";
menu_sub08on = new Image(163,23);menu_sub08on.src = "images/menu_sub08_ov.gif";
menu_sub09on = new Image(163,23);menu_sub09on.src = "images/menu_sub09_ov.gif";

menu_sub01off = new Image(163,23);menu_sub01off.src = "images/menu_sub01.gif";
menu_sub02off = new Image(163,35);menu_sub02off.src = "images/menu_sub02.gif";
menu_sub03off = new Image(163,35);menu_sub03off.src = "images/menu_sub03.gif";
menu_sub04off = new Image(163,23);menu_sub04off.src = "images/menu_sub04.gif";
menu_sub05off = new Image(163,23);menu_sub05off.src = "images/menu_sub05.gif";
menu_sub06off = new Image(163,23);menu_sub06off.src = "images/menu_sub06.gif";
menu_sub07off = new Image(163,23);menu_sub07off.src = "images/menu_sub07.gif";
menu_sub08off = new Image(163,23);menu_sub08off.src = "images/menu_sub08.gif";
menu_sub09off = new Image(163,23);menu_sub09off.src = "images/menu_sub09.gif";
  
}

function turnOn(imageName) {
if (document.images) {
document[imageName].src = eval(imageName + "on.src");
  }	
}

function turnOff(imageName) {
if (document.images) {
document[imageName].src = eval(imageName + "off.src");
  }
}