//Preload Images

if (document.images); {
	var astronomy = new Image(45,45);
	astronomy.src = "images/astronomy_75.gif";
	var atmosphere = new Image(45,45);
	atmosphere.src = "images/atmosphere_75.gif";
	var drought = new Image(45,45);
	drought.src = "images/drought_75.gif";
	var earthquake = new Image(45,45);
	earthquake.src = "images/earthquake_75.gif";
	var fauna = new Image(45,45);
	fauna.src = "images/fauna_75.gif";
	var fire = new Image(45,45);
	fire.src = "images/fire_75.gif";
	var flood = new Image(45,45);
	flood.src = "images/flood_75.gif";
	var flora = new Image(45,45);
	flora.src = "images/flora_75.gif";
	var health = new Image(45,45);
	health.src = "images/health_75.gif";
	var hurricane = new Image(45,45);
	hurricane.src = "images/hurricane_75.gif";
	var oil_spill = new Image(45,45);
	oil_spill.src = "images/oil_spill_75.gif";
	var radioactivity = new Image(45,45);
	radioactivity.src = "images/radioactivity_75.gif";
	var severe_storm = new Image(45,45);
	severe_storm.src = "images/severe_storm_75.gif";
	var tornado = new Image(45,45);
	tornado.src = "images/tornado_75.gif";
	var tropical_storm = new Image(45,45);
	tropical_storm.src = "images/tropical_storm_75.gif";
	var volcano = new Image(45,45);
	volcano.src = "images/volcano_75.gif";
	var spacer = new Image(45,45);
	spacer.src = "images/spacer_75.gif";
	var button_journal = new Image(242,37);
	button_journal.src = "images/button_journal.gif";
	var button_journal_over = new Image(242,37);
	button_journal_over.src = "images/button_journal_over.gif";
	var button_legend = new Image(94,33);
	button_legend.src = "images/button_legend.gif";
	var button_legend_over = new Image(94,33);
	button_legend_over.src = "images/button_legend_over.gif";
	}

function act(imgId) {
	//alert(imgId);
	if (document.getElementById) {
		var imgSrc = "images/" + imgId + "_over.gif";
		document.getElementById(imgId).src = imgSrc;
	} else {document.getElementById = function() {return null;}}
}

function inact(imgId) {
	//alert(imgId);
	if (document.getElementById) {
		var imgSrc = "images/" + imgId + ".gif";
		document.getElementById(imgId).src = imgSrc;
	} else {document.getElementById = function() {return null;}}
}