// Pre-load the images and assign them to a variable with home reference
if (browser) {
	imgOn = new Image(9,9);
	imgOn.src = "./resources/images/skeleton/box_pn_on.gif";
	imgOff = new Image(9,9);
	imgOff.src = "./resources/images/skeleton/box_pn_off.gif";
}

// Change the pre-loaded image to the "On" image
function switchImageOn(imgName) {
	if (browser) {
	  document[imgName].src = imgOn.src;
	  return true;
	}
}

// Change the pre-loaded image to the "Off" image
function switchImageOff(imgName) {
    if (browser) {
   	  //imgOff = imgOff.src;//eval("imgOff.src");
	  document[imgName].src = imgOff.src;
	  return true;
	}
}