function mainmenuover(what) {}
function mainmenuout(what) {}

function doOnLoad() {

	// preload images
	preload('assets/images/recommend-us-over.gif');
	preload('assets/images/menu-home-over.gif');
	preload('assets/images/menu-about-over.gif');
	preload('assets/images/menu-products-over.gif');
	preload('assets/images/menu-services-over.gif');
	preload('assets/images/menu-specials-over.gif');
	preload('assets/images/menu-employment-over.gif');
	preload('assets/images/menu-locations-over.gif');
	preload('assets/images/menu-contact-over.gif');
	preload('assets/images/menu-team-over.gif');
}

function preload(imgsrc) {
	var i = new Image();
	i.src = imgsrc;
}


function menuOver(that) {
	var k = that.name.substr(5);
	that.src = 'assets/images/menu-'+k+'-over.gif';
}

function menuOut(that) {
	var k = that.name.substr(5);
	that.src = 'assets/images/menu-'+k+'.gif';
}


// error class
function Errors() {
	this.errors = new Array();

	this.add = function(msg) {
		this.errors[this.errors.length] = msg;
	}
	this.alert = function() {
		if(!this.errors.length) return false;

		var msg = 'The following error(s) have occurred:\n\n';

		for(var i=0; i<this.errors.length; ++i) {
			msg += '*  ' + this.errors[i];
			if(i < this.errors.length - 1) msg += '\n\n';
		}

		alert(msg);
		return true;
	}
}

function validate_email(email) {
	if(email.length <= 5) return false;
	if(email.indexOf('@', 0) == -1) return false;
	return true;
}


function validate_optin() {
	var e = new Errors();

	errfound = false;
	if (!validate_email(document.optin.email.value))
		e.add("Sorry, Invalid Email Address!");

	if(e.alert()) return false;
	return true;
}