current_overID = "";
last_overID = "";

function item (img_name,width,height){
	img_prefix = img_name;
	this.slide_img = new Image (width,height);
	this.slide_img.src = "images/tahoe/" + img_prefix + ".gif";
}

function new_item (img_name,width,height){
	item [img_name] = new item (img_name,width,height);
}

function mouseover (itemID){
	current_overID = itemID;
	if (current_overID != last_overID) {
		document.tahoemap.src = item [current_overID].slide_img.src;
	}
}