var	oImgs = [];
var box = {};
function init(){
	var imgs = ['menu-services-on.png', 'menu-about-on.png', 'menu-contact-on.png', 'menu-success-on.png', 'drop-kitchen-on.png', 'drop-hvac-on.png', 'drop-vent-on.png', 'drop-industrial-on.png', 'drop-specialty-on.png'];
	for(var i=0;i<imgs.length;i++){
		var img = new Image();
		img.src = 'pics/' + imgs[i];
		oImgs[i] = img;
	}
	box = new MultiBox('mb', {descClassName:'multiBoxDesc',useOverlay:true});
}
function El(id){return document.getElementById(id);}
function dropdown(isVisible){
	El('dropdown').style.visibility = isVisible ? 'visible' : 'hidden';
}
function in_(e){
	if (typeof(e) == 'string') e = El(e);
	e.src = 'pics/' + e.id + '-on.png';
	if (e.id == 'menu-services') dropdown(1);
}
function out(e){
	if (typeof(e) == 'string') e = El(e);
	e.src = 'pics/' + e.id + '-off.png';
	if (e.id == 'menu-services') dropdown(0);
}