// BEGIN Identify Rollover Images
if ((domData.isIE4up) || (domData.isNN6up)) {

	var topics_agriculture_over = new Image();
	var topics_anthropology_over = new Image();
	var topics_astronomy_over = new Image();
	var topics_biological_over = new Image();
	var topics_chemistry_over = new Image();
	var topics_computing_over = new Image();
	var topics_earth_over = new Image();
	var topics_engineering_over = new Image();
	var topics_environmental_over = new Image();
	var topics_food_over = new Image();
	var topics_general_over = new Image();
	var topics_mathematics_over = new Image();
	var topics_medicine_over = new Image();
	var topics_military_over = new Image();
	var topics_navigation_over = new Image();
	var topics_paleontology_over = new Image();
	var topics_physics_over = new Image();
	var topics_psychiatry_over = new Image();
	var topics_veterinary_over = new Image();

	var topics_agriculture_out = new Image();
	var topics_anthropology_out = new Image();
	var topics_astronomy_out = new Image();
	var topics_biological_out = new Image();
	var topics_chemistry_out = new Image();
	var topics_computing_out = new Image();
	var topics_earth_out = new Image();
	var topics_engineering_out = new Image();
	var topics_environmental_out = new Image();
	var topics_food_out = new Image();
	var topics_general_out = new Image();
	var topics_mathematics_out = new Image();
	var topics_medicine_out = new Image();
	var topics_military_out = new Image();
	var topics_navigation_out = new Image();
	var topics_paleontology_out = new Image();
	var topics_physics_out = new Image();
	var topics_psychiatry_out = new Image();
	var topics_veterinary_out = new Image();

	topics_agriculture_over.src = "/matt_pages/all_images/topics_agriculture_over.gif";
	topics_anthropology_over.src = "/matt_pages/all_images/topics_anthropology_over.gif";
	topics_astronomy_over.src = "/matt_pages/all_images/topics_astronomy_over.gif";
	topics_biological_over.src = "/matt_pages/all_images/topics_biological_over.gif";
	topics_chemistry_over.src = "/matt_pages/all_images/topics_chemistry_over.gif";
	topics_computing_over.src = "/matt_pages/all_images/topics_computing_over.gif";
	topics_earth_over.src = "/matt_pages/all_images/topics_earth_over.gif";
	topics_engineering_over.src = "/matt_pages/all_images/topics_engineering_over.gif";
	topics_environmental_over.src = "/matt_pages/all_images/topics_environmental_over.gif";
	topics_food_over.src = "/matt_pages/all_images/topics_food_over.gif";
	topics_general_over.src = "/matt_pages/all_images/topics_general_over.gif";
	topics_mathematics_over.src = "/matt_pages/all_images/topics_mathematics_over.gif";
	topics_medicine_over.src = "/matt_pages/all_images/topics_medicine_over.gif";
	topics_military_over.src = "/matt_pages/all_images/topics_military_over.gif";
	topics_navigation_over.src = "/matt_pages/all_images/topics_navigation_over.gif";
	topics_paleontology_over.src = "/matt_pages/all_images/topics_paleontology_over.gif";
	topics_physics_over.src = "/matt_pages/all_images/topics_physics_over.gif";
	topics_psychiatry_over.src = "/matt_pages/all_images/topics_psychiatry_over.gif";
	topics_veterinary_over.src = "/matt_pages/all_images/topics_veterinary_over.gif";
	
	topics_agriculture_out.src = "/matt_pages/all_images/topics_agriculture_out.gif";
	topics_anthropology_out.src = "/matt_pages/all_images/topics_anthropology_out.gif";
	topics_astronomy_out.src = "/matt_pages/all_images/topics_astronomy_out.gif";
	topics_biological_out.src = "/matt_pages/all_images/topics_biological_out.gif";
	topics_chemistry_out.src = "/matt_pages/all_images/topics_chemistry_out.gif";
	topics_computing_out.src = "/matt_pages/all_images/topics_computing_out.gif";
	topics_earth_out.src = "/matt_pages/all_images/topics_earth_out.gif";
	topics_engineering_out.src = "/matt_pages/all_images/topics_engineering_out.gif";
	topics_environmental_out.src = "/matt_pages/all_images/topics_environmental_out.gif";
	topics_food_out.src = "/matt_pages/all_images/topics_food_out.gif";
	topics_general_out.src = "/matt_pages/all_images/topics_general_out.gif";
	topics_mathematics_out.src = "/matt_pages/all_images/topics_mathematics_out.gif";
	topics_medicine_out.src = "/matt_pages/all_images/topics_medicine_out.gif";
	topics_military_out.src = "/matt_pages/all_images/topics_military_out.gif";
	topics_navigation_out.src = "/matt_pages/all_images/topics_navigation_out.gif";
	topics_paleontology_out.src = "/matt_pages/all_images/topics_paleontology_out.gif";
	topics_physics_out.src = "/matt_pages/all_images/topics_physics_out.gif";
	topics_psychiatry_out.src = "/matt_pages/all_images/topics_psychiatry_out.gif";
	topics_veterinary_out.src = "/matt_pages/all_images/topics_veterinary_out.gif";

} // END Identify Rollover Images



// BEGIN imageOver: Replace image named 'imagename' with 'imagename_over'
function imageOver(imageName) {
	if ((domData.isIE4up) || (domData.isNN6up)) {
		document.images[imageName].src = eval(imageName + "_over.src");
	}
} // END imageOver(imageName)



// BEGIN imageOut: Replace image named 'imagename' with 'imagename_out'
function imageOut(imageName) {
	if ((domData.isIE4up) || (domData.isNN6up)) {
		document.images[imageName].src = eval(imageName + "_out.src");
	}
} // END imageOut(imageName)