I built this last weekend. A specially crafted URL opens a page where a "paypal button" form is created, with a single big button to pay. I needed this to rem

I built this last weekend. A specially crafted URL opens a page where a "paypal button" form is created, with a single big button to pay. I needed this to remind (ex) clients that I need to get paid, while being able to modify the amount quickly in case they only pay part of the total. Let me know what you think.