var loaded = false;

if (document.images) {

	/* PreCache all "normal" button images */
	/* set "normal" image path for each button */
	var normal = new Array();
		normal['why'] = new Image;
		normal['why'].src = "../images/index/why.gif";
		normal['how']= new Image;
		normal['how'].src = "../images/index/how.gif";
		normal['see'] = new Image;
		normal['see'].src = "../images/index/see.gif";
		normal['contact'] = new Image; 
		normal['contact'].src = "../images/index/contact.gif";
	
	/* PreCache all "over" button images */
	/* set "over" image path for each button */
	var over = new Array();
		over['why'] = new Image;
		over['why'].src = "../images/index/whyon.gif";
		over['how']= new Image;
		over['how'].src = "../images/index/howon.gif";
		over['see'] = new Image;
		over['see'].src = "../images/index/seeon.gif"
		over['contact'] = new Image; 
		over['contact'].src = "../images/index/contacton.gif";;
	loaded = true;
}// end if
	
function rollOver(id) {
	if (document.images) {
		document.images[id].src = over[id].src;
	}
}

function rollOut(id) {
	if (document.images){
		document.images[id].src = normal[id].src;
	}
}

function init() {
	rollOver(currentSection);			
}