function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}
function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}
var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		home_over = newImage("images/L-home-over.gif");
		company_over = newImage("images/L-company-over.gif");
		projects_over = newImage("images/L-projects-over.gif");
		contact_over = newImage("images/L-contact-over.gif");
		preloadFlag = true;
	}
}
function checkForm(theForm) {
	msg = "Please give us your ";
	hasName = false;
	thisName = theForm.elements["yourname"].value;
	thisEmail = theForm.elements["email"].value;
	if (thisName == "") {
		msg += "Name ";
		hasName = true;
	}
	if (thisEmail == "") {
		comma = hasName ? "and " : "";
		msg = msg + comma + "Email Address";
	}
	if (msg != "Please give us your ") {
		alert(msg);
		return false;
	}
	var emailRE = /^(\w+-?\w*\.)*\w+-?\w*\@(\w+-?\w*\.)*\w+-?\w*\.\w\w\w?$/;
	var emailM = emailRE.test(thisEmail);
	if (!emailM) {alert('Please format email address: someone@somewhere.com');return false}
}