function checkbox_click(e){
	e.checked = !e.checked;
	billing_shipping();
}

function billing_shipping(){
	
	if(document.getElementById('shipping_billing').checked){
		
		f = document.form_checkout;
		
		f.billing_firstname.value = f.shipping_firstname.value;
		f.billing_lastname.value = f.shipping_lastname.value;
		f.billing_company.value = f.shipping_company.value;
		f.billing_phone.value = f.shipping_phone.value;
		f.billing_address1.value = f.shipping_address1.value;
		f.billing_address2.value = f.shipping_address2.value;
		f.billing_city.value = f.shipping_city.value;
		f.billing_state.value = f.shipping_state.value;
		f.billing_zip.value = f.shipping_zip.value;
		f.billing_country.value = f.shipping_country.value;
		
	}
	
}

function show_release(id_release){
	alert('show release');
	window.open('http://www.google.com');
}