// JavaScript Document

function enlarge(image, width, height) {
	window.open("images/product.php?image="+image, "Image", "width="+width+",height="+height);
}

function show_description(page) { 
	window.open("pages/"+page+".php", "Description", "width=400,height=300, scrollbars=yes");
}

function toggle() {
	if(document.checkout_form.same.checked) {
		// disable
		document.checkout_form.invoice_name.disabled = true;
		document.checkout_form.invoice_telephone.disabled = true;
		document.checkout_form.invoice_email.disabled = true;
		document.checkout_form.invoice_address1.disabled = true;
		document.checkout_form.invoice_address2.disabled = true;
		document.checkout_form.invoice_address3.disabled = true;
		document.checkout_form.invoice_county.disabled = true;
		document.checkout_form.invoice_postcode.disabled = true;
		document.checkout_form.invoice_country.disabled = true;
		// alter bg
		document.checkout_form.invoice_name.style.background = "#dddddd";
		document.checkout_form.invoice_telephone.style.background = "#dddddd";
		document.checkout_form.invoice_email.style.background = "#dddddd";
		document.checkout_form.invoice_address1.style.background = "#dddddd";
		document.checkout_form.invoice_address2.style.background = "#dddddd";
		document.checkout_form.invoice_address3.style.background = "#dddddd";
		document.checkout_form.invoice_county.style.background = "#dddddd";
		document.checkout_form.invoice_postcode.style.background = "#dddddd";
		document.checkout_form.invoice_country.style.background = "#dddddd";
	}
	
	if(!document.checkout_form.same.checked) {
		// enable
		document.checkout_form.invoice_name.disabled = false;
		document.checkout_form.invoice_telephone.disabled = false;
		document.checkout_form.invoice_email.disabled = false;
		document.checkout_form.invoice_address1.disabled = false;
		document.checkout_form.invoice_address2.disabled = false;
		document.checkout_form.invoice_address3.disabled = false;
		document.checkout_form.invoice_county.disabled = false;
		document.checkout_form.invoice_postcode.disabled = false;
		document.checkout_form.invoice_country.disabled = false;
		// alter bg
		document.checkout_form.invoice_name.style.background = "#FFFFFF";
		document.checkout_form.invoice_telephone.style.background = "#FFFFFF";
		document.checkout_form.invoice_email.style.background = "#FFFFFF";
		document.checkout_form.invoice_address1.style.background = "#FFFFFF";
		document.checkout_form.invoice_address2.style.background = "#FFFFFF";
		document.checkout_form.invoice_address3.style.background = "#FFFFFF";
		document.checkout_form.invoice_county.style.background = "#FFFFFF";
		document.checkout_form.invoice_postcode.style.background = "#FFFFFF";
		document.checkout_form.invoice_country.style.background = "#FFFFFF";
	}
	
}
<!--//--><![CDATA[//><!--
startList = function() {
	if (document.all&&document.getElementById) {
		navRoot = document.getElementById("nav");
		for (i=0; i<navRoot.childNodes.length; i++) {
			node = navRoot.childNodes[i];
			if (node.nodeName=="LI") {
				node.onmouseover=function() {
					this.className+=" over";
				}
				node.onmouseout=function() {
					this.className=this.className.replace(" over", "");
				}
			}
		}
	}
}
window.onload=startList;

//--><!]]>