function changeProductOption(optionNumber, SKU, altText) {
	changeProductImage(SKU, altText);
}

function changeSwatch(SKU, altText, price, weight, mode) {
	document.getElementById(SKU).selected = true;
	changeProductImage(SKU, altText);
}

function changeProductImage(SKU, altText) {
	var product_image = document.getElementById("main_product_image");
	var product_image_src = product_image.src;
	product_image.src = product_image_src.replace(/\/[A-Za-z0-9]*\.jpg/gi, '/'+SKU+'.jpg');
	product_image.alt = altText;
}

function changeDetailImage(URL) {
	var detail_image = document.getElementById("main_detail_image");
	detail_image.src = URL;
}

function changePrice(price) {
	var price_write = document.getElementById("prod_price");
	price_write.innerHTML = '$'+price;
}

function changeInstockPrice(price) {
	var price_write = document.getElementById("instock_price");
	price_write.innerHTML = '$'+price;
}