function ShowSubNav() {
	document.getElementById('products').src = "images/products-on.png";
	document.getElementById('sub-nav').style.display = "block";
}

function HideSubNav() {
	document.getElementById('products').src = "images/products-off.png";
	document.getElementById('sub-nav').style.display = "none";
}

function UpdatePrices(regularPrice, onlinePrice, quantity, pid, oid) {
	
	if (quantity == "") {
		quantity = 1;
	}
	
	if (CheckUnsignedInteger(quantity) && quantity > 0) {
		var regularPrice = regularPrice * quantity;
		document.getElementById('regularPriceText').innerHTML = "$" + regularPrice.toFixed(2);
		
		var onlinePrice = onlinePrice * quantity;
		document.getElementById('onlinePriceText').innerHTML = "$" + onlinePrice.toFixed(2);
		
		document.getElementById('myframe').src = "quote-pod.cfm?pid=" + pid + "&q=" + quantity + "&oid=" + oid;

	} else {
		alert('* Please enter a valid quantity.');
		document.getElementById('quantity').value = "";
	}
}

function CheckUnsignedInteger(quantity) {
	return (quantity.toString().search(/^[0-9]+$/) == 0);
}

function copyBilling() {
	document.getElementById("ship_firstname").value = document.getElementById("bill_firstname").value;
	document.getElementById("ship_lastname").value = document.getElementById("bill_lastname").value;
	document.getElementById("ship_company").value = document.getElementById("bill_company").value;
	document.getElementById("ship_address1").value = document.getElementById("bill_address1").value;
	document.getElementById("ship_address2").value = document.getElementById("bill_address2").value;
	document.getElementById("ship_city").value = document.getElementById("bill_city").value;
	document.getElementById("ship_state").value = document.getElementById("bill_state").value;
	document.getElementById("ship_zip").value = document.getElementById("bill_zip").value;
	document.getElementById("ship_email").value = document.getElementById("bill_email").value;
	document.getElementById("ship_phone").value = document.getElementById("bill_phone").value;
}