Will need a simple loan calculator in few days.

Details:
- will open as a popup in clients website
- stylesheet of the host page is sent to winner

Process:
- 1 open field for loan amount (sum between 500-2500, otherwise prompted
- 1 dropdown field for selecting loan time (1,2,3,4,5 years)
- submit button
- script calculates monthly payment, annual interest and total payment and views them to customer


Please check the attached xls file where is a working calculator.

The PMT function of the excel sheet can be translated to php like this http://www.codingforums.com/archive/index.php?t-52096.html