Javascript Code Modification for PayPal Subscribe Button

IN PROGRESS
Bids
10
Avg Bid (USD)
$99
Project Budget (USD)
$30 - $250

Project Description:
I need some JavaScript code that will allow my visitors to enter the amount that they would like to donate for a PayPal subscription button, and the interval option, one-time donation, weekly donation, or monthly donation.

I would like to collect either a one-time donation, weekly, or monthly donations via a PayPal subscription button. This will vary based on the person donating the money.

I need that information dynamically passed to the PayPal (I think it is the a3 variable and t3 variable).
This PayPal page should help: https://www.paypal.com/us/cgi-bin/webscr?cmd=_pdn_subscr_techview_outside

When a use clicks the "Donate" button, something should prompt the user with the following info:

-I would like to make a one-time donation of $_____
-I would like to donate $______ weekly
-I would like to donate $_______ monthly

After they select the amount, this information should be passed to the appropriate PayPal variables. Next, the user should be taken to the PayPal page.

Skills required:
Javascript, Paypal API, Website Design
About the employer:
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