function changeprice1(which){switch (which) {case '1 Tier UPGRADE': document.forms.paypal1.elements.amount.value='1.00';document.getElementById("pricediv1").innerHTML = '£1.00'; break;case '2 Tier UPGRADE': document.forms.paypal1.elements.amount.value='1.50';document.getElementById("pricediv1").innerHTML = '£1.50'; break;case '3 Tier UPGRADE': document.forms.paypal1.elements.amount.value='2.20';document.getElementById("pricediv1").innerHTML = '£2.20'; break;case '4 Tier UPGRADE': document.forms.paypal1.elements.amount.value='2.90';document.getElementById("pricediv1").innerHTML = '£2.90'; break; } } Upgrade to ECO-FRIENDLY Nappies £1.00 (+ postage of £0.00) Please select how many tiers you wish your nappy cake to contain and add to your basket. Then proceed to purchase your nappy cake in the usual manner & we will substitute the usual Huggies for Nature Baby Care Eco-Friendly Nappies 1 Tier Nappy Cake  Eco-Friendly Upgrade - £1.00 2 Tier Nappy Cake  Eco-Friendly Upgrade - £1.50 3 Tier Nappy Cake  Eco-Friendly Upgrade - £2.20 4 Tier Nappy Cake  Eco-Friendly Upgrade - £2.90 Quantity: 12345678910 Options: Please select ...1 Tier UPGRADE2 Tier UPGRADE3 Tier UPGRADE4 Tier UPGRADE Buy Now: