if(document.images !=null){preload()}

function preload() {
	nav01 = new Image();
	nav01.src = "images/portal_adopted_text.jpg";
	nav02 = new Image();
	nav02.src = "images/portal_caseworker_text.jpg";
	nav03 = new Image();
	nav03.src = "images/portal_considering_text.jpg";
	
	nav01on = new Image();
	nav01on.src = "images/portal_adopted_on.jpg";
	nav02on = new Image();
	nav02on.src = "images/portal_caseworker_on.jpg";
	nav03on = new Image();
	nav03on.src = "images/portal_considering_on.jpg";

		
}

function switchImages(title, title_name){
	if(document.images != null){
		var titleOn = (title.length == 7);
		title = eval(title + ".src");
		document[title_name].src = title;
		title = title_name + "_arrow";
		
	}
}