function preloadImages() {
	var visit = new Image
		visit.src = "images/visit-over.jpg"
	var about = new Image
		about.src = "images/about-over.jpg"
	var members = new Image
		members.src = "images/members-over.jpg"
	var events = new Image
		events.src = "images/events-over.jpg"
	var exhibits = new Image
		exhibits.src = "images/exhibits-over.jpg"
	var animals = new Image
		animals.src = "images/animals-over.jpg"
	var conservation = new Image
		conservation.src = "images/conservation-over.jpg"
	var teach = new Image
		teach.src = "images/teach-over.jpg"
	var educational = new Image
		educational.src = "images/teach_educational-over.jpg"
	var trip = new Image
		trip.src = "images/teach_trip-over.jpg"
	var audience = new Image
		audience.src = "images/teach_audience-over.jpg"
	var theme = new Image
		theme.src = "images/teach_theme-over.jpg"
}

window.onload = preloadImages;

function changeImages(sName,sImage) {
  document.images[sName].src = sImage
}

function goToLessonPlanList()
	{
	document.bottomlinkform.res_type.value="lp";
	document.bottomlinkform.action="search_results.cfm";
	document.bottomlinkform.submit();
	}

function goToInteractivesList()
	{
	document.bottomlinkform.res_type.value="im";
	document.bottomlinkform.action="search_results.cfm";
	document.bottomlinkform.submit();
	}

function goToLessonPlanListSub()
	{
	document.bottomlinkform.res_type.value="lp";
	document.bottomlinkform.action="../search_results.cfm";
	document.bottomlinkform.submit();
	}

function goToInteractivesListSub()
	{
	document.bottomlinkform.res_type.value="im";
	document.bottomlinkform.action="../search_results.cfm";
	document.bottomlinkform.submit();
	}