var state = "hidden";

function showhide(layer_ref) {
	if (state == 'visible') {
		state = 'hidden';
	} else {
		state = 'visible';
	}
	if (document.all) { //IS IE 4 or 5 (or 6 beta)
		eval( "document.all." + layer_ref + ".style.visibility = state");
	}
	if (document.layers) { //IS NETSCAPE 4 or below
		document.layers[layer_ref].visibility = state;
	}
	if (document.getElementById && !document.all) {
		maxwell_smart = document.getElementById(layer_ref);
		maxwell_smart.style.visibility = state;
	}
}
	
function setLeftImage () {
	var leftImages = ["fallforestpath.jpg","forestpath.jpg","greenpath.jpg","mtnpath.jpg","steppath.jpg"];
	var ranInt = Math.round(Math.random() * 4);
	var currentImageUrl = "images/" + leftImages[ranInt];
	var imageBox = document.getElementById("mainbox-imagebar");
	imageBox.style.backgroundImage = "url(" + currentImageUrl + ")";
}