// Hilites an Image
// Expects imgName, Images must be defined in the calling document
function hiliteImg(imgName) {
	document.images[imgName].src = eval(imgName + '_active').src;
}

// Clears a hilited Image
// Expects imgName, Images must be defined in the calling document
function clearImg(imgName) {
	document.images[imgName].src = eval(imgName + '_inactive').src;
}