function buyItem(newCode,newItem,newPrice,newQuantity) {
		if(newQuantity == '0') {
            rc = alert('Please enter the quantity required');		
		} else if(newPrice == 'Type' || newPrice == null) {
            rc = alert('Please enter the type required');		
		}  else {
                 
var url="http://www.viva.org.uk/vivashop/cart.php?add=true&code="+newCode+"&item="+escape(newItem)+"&price="+escape(newPrice)+"&quan="+newQuantity;
location.href =url;

         }
     }