var home_over = new Image();
	home_over.src = "images/shared/nav/home-over.gif";
	
	var know_over = new Image();
	know_over.src = "images/shared/nav/know-over.gif";
	
	var keep_over = new Image();
	keep_over.src = "images/shared/nav/keep-over.gif";
	
	var real_over = new Image();
	real_over.src = "images/shared/nav/real-over.gif";
	
	var normalize_over = new Image();
	normalize_over.src = "images/shared/nav/normalize-over.gif";
	
	var opt_over = new Image();
	opt_over.src = "images/shared/nav/opt-over.gif";
	
	var work_over = new Image();
	work_over.src = "images/shared/nav/work-over.gif";
	
	var success_over = new Image();
	success_over.src = "images/shared/nav/success-over.gif";
	
	var learn_over = new Image();
	learn_over.src = "images/shared/nav/learn-over.gif";
	
	var answers_over = new Image();
	answers_over.src = "images/shared/nav/answers-over.gif";
	
	var recipes_over = new Image();
	recipes_over.src = "images/shared/nav/recipes-over.gif";

	var tools_over = new Image();
	tools_over.src = "images/shared/nav/tools-over.gif";

	
	var quiz_over = new Image();
	quiz_over.src = "images/shared/how_well_quiz-over.jpg";
	
	var glossary_over = new Image();
	glossary_over.src = "images/shared/how_well_glossary-over.jpg";
	
	var anim_over = new Image();
	anim_over.src = "images/shared/how_well_anim-over.jpg";
	
	var enrollNow_over = new Image();
	enrollNow_over.src = "images/shared/enrollnow-over.gif";
	
	var mdhaImage_over = new Image();
	mdhaImage_over.src = "images/shared/mdha-over.gif";
	
	var mdhaImageG_over = new Image();
	mdhaImageG_over.src = "../images/shared/mdha-over.gif";
	
	function swapImage(orgImage,rollImage) {
		document[orgImage].src = rollImage.src;	
	}
	
	function restoreImage(orgImage,rollImage) {
		document[orgImage].src = rollImage.src.replace('-over','');
	}