//preload images into an array
if (document.images) {
	var bannerArray = new Array();
	
	for (var i = 0; i < 4; i++) {
		bannerArray[i] = new Image();
		bannerArray[i].src = "images/random/img_" + i + ".gif";
		bannerArray[i].width = 720;
		bannerArray[i].height = 171;
	}
}
	
function getRandomBanner() {
	var useBanner = Math.floor(Math.random() * bannerArray.length);
	
	//alert(bannerArray[useBanner].src);
	var banner = document.getElementById("banner");
	
	banner.style.backgroundImage = "url(" + bannerArray[useBanner].src + ")";
}

/*window.onload = function () {
	getRandomBanner();
}*/

function validate() {
	var doc = document.formmail	
	if(doc.txtemail.value == "" && doc.phone.value == "")
		{
			alert("So we may follow up with you regarding your needs, please enter either your phone number or email address.")
			return false;
		}
}