function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		img_mind_over = newImage("images/home/img_mind-over.jpg");
		img_soul_over = newImage("images/home/img_soul-over.jpg");
		img_spirit_over = newImage("images/home/img_spirit-over.jpg");
		img_nav_book_over = newImage("images/navigation/img_nav_book-over.gif");
		img_nav_about_over = newImage("images/navigation/img_nav_about-over.gif");
		img_nav_audio_over = newImage("images/navigation/img_nav_audio-over.gif");
		img_nav_discussion_over = newImage("images/navigation/img_nav_discussion-over.gif");
		img_nav_speaking_over = newImage("images/navigation/img_nav_speaking-over.gif");
		img_nav_contact_over = newImage("images/navigation/img_nav_contact-over.gif");
		preloadFlag = true;
	}
}

function clear_value() {
if (email_address.email.value=="enter your email")
 {
  email_address.email.value = ""
 }
}