Match right form for these changes.

The general selectors previously used here matched either form. With
this change, they will only match the form for which the selection was
actually made.

Rework Javascript final form validation.

The problem before was that an error in the annual form would prevent
submission of the monthly form and vice-versa. That is herein corrected
with this change, which assures that the input with id of "amount" if
the specific form (id'd with "annual" or "monthly") is the only one
checked.

supporter-form & support-form-submit: class,not id

These should be classes, not ids, and the ids should identify whether
it's the monthly or the annual form.

Return amount to id; add id for error span.

I actually think I want amount to be id rather than a class, now that I
figured out the proper selector to find them all.

Also, the $("span", input.parent()) was buggy if there were any other
span's other than error-related ones in the supporter-form-inputs div.

Finally, ditch that <small> stuff and simply place a font-size reduction
into the CSS for the form-error-show.

Modify PayPal "no_shipping" var via t-shirt choice

According to
https://developer.paypal.com/docs/classic/paypal-payments-standard/integration-guide/Appx_websitestandard_htmlvariables/

no_shipping has the following values:
0: prompt for an address, but do not require one
1: do not prompt for an address
2: prompt for an address, and require one
The default is 0.

Ideally, any time they change wantGift, even in a pure HTML form, we'd
change it between 0 and 2 as appropriate (i.e., we need the address if
they want the t-shirt).

However, I couldn't find an easy way to make this modification in pure
CSS or HTML, so it only happens in Javascript-enabled browsers.

This is still graceful degradation, since the only impact is in cases
where a non-Javascript user fails to give us an address, and we have to
email later to get the shipping address.

Monthly supporter can enter variable amount.

This required some doing. I'm not completely sure it works, but I
roughly followed the tutorial available at:
https://www.paypal.com/webapps/mpp/get-started/create-recurring-donation-button
with back-reference to this:
https://developer.paypal.com/docs/classic/paypal-payments-standard/integration-guide/Appx_websitestandard_htmlvariables/

My main concern with this setup currently is that 'p3' must be set to
'1', which would seem from the documentation to be saying the payment
will recur only once. There is a subtle hint via the tutorial that
setting 'src' to 1 will override 'p3' with whatever is found in 'srt',
but that's not said anywhere explicitly that I can find. So, I'm going
with this and I'll just test it myself with a monthly subscription to
see if it's indefinite (which is the behavior we herein desire).

Finally, note that "amount" is now a class rather than id, since I'm now
using the associated jQuery .on('input') code for both the annual and
monthly amount boxes.

Change default to "no t-shirt".

I suspect some supporters are just accepting the default, so by default,
the t-shirt option will be "No", and supporters will have to
affirmatively chose "Yes".

Thanks to previously committed Javascript hack, users with Javascript
capable browsers should avoid seeing the t-shirt sizing options until
they chose "Yes".

Hide t-shirt size selector when t-shirt's unwanted

Use Javascript to hide the t-shirt size selector when the the user
selects "No" for "Do you want a t-shirt?". Reshow it (and make sure
it's shown by default) for "Yes".

SVG bullet list of supporters on sponsors page.

This CSS, which I discovered from extensive research online, should work
to create a bulleted list with the bullets being the heart-shaped
Conservancy logo.

Correct Markdown-style footnote w/ HTML style one.

This footnote is now correctly formatted in HTML, with links back and
forth, as well as a jQuery UI tooltip popup for the footnote.

Simply clear error for monthly donation.

Since the error messages relate only to the amount entered, the error
message should be cleared when switching to the monthly giving option.

Amount starts class "valid", when default accepted

The default amount of $120 appears in the amount field, but the class
"valid" was usually only added when the user changes the amount.

The valid class must be added at the start to ensure someone simply
clicking with the default still can donate.

Avoid donate-sidebar on small screens.

The donate-sidebar overlaps with text on small screens. This problem is
corrected herein by using @media for 500px screens to remove display of
the sidebar.

Remove hard-coded style= for donate-sidebar div

Move the CSS for the donate-sidebar into the conservancy.css file
instead of hard-coding in the HTML.

Larger error message when submitting bad amount.

This addition to the Javascript and text ensures a clear message to the
user of a Javascript-enabled browser that there is an issue with the
amount. Also, it prevents submission of the form until the amount is
correct.

A user with Javascript disabled can circumvent these validation steps;
however, the worst-case scenario is that they make a donation for less
than $120 that is categorized in Conservancy's internal system as a
Supporter donation, and we'll be adding internal checks to find that.

Correct regular expression and comma thing fully.

parseInt() likely wants no commas, so we use a value without it, and the
regular expression now seems to properly match was PayPal will take as
valid.

Modify CSS, image & related so img of heart works.

Putting the heart on the floated right corner should work pretty well
now with this CSS.

Force scaling of width for banner.

The banner should scale with the width of the window.

Apparently, we aren't using this now.

<tony> bkuhn, karen: so, let's not bother using the logo-heart. The pic adds
enough visual interest. Now, what about the the text header. Do you
want it to be a smidgen smaller?

Thank-you page to redirect supporters post-payment

This page is now set as part of the PayPal giving forms to redirect
supporters to after they've paid.

Another adjustment to the forms CSS.

This is working on my test site but not on the main website. I can't
figure out why.

Customized buttons for annual/monthly supporter.

These buttons were drawn by Tony and replace the default PayPal buttons.

Subscriptions for monthly supporters.

There are now two options at the bottom of the page, annual and monthly
supporters.

In addition, there is Javascript code to cause the annual and monthly
items disappear and reappear upon selection either in the donate box or
the selector above the items.

I tested this in links and it seems to degrade reasonably well.

Float Donate button to the center beside questions

The donate button is now centered beside the questions that relate to
the supporter program.

Better formatting for submit button.

The needed CSS is already in forms.css

Rework form with error messages & basic validation

Since PayPal cannot seem to be cajoled into verifying a minimum amount,
we have to do it here with Javascript. This isn't perfect validation:
the form can currently still be submitted with an amount less than $120,
but at least this way Javascript-enabled browsers might prevent some
folks from doing that.

Remove ! from this sentence, per karen:

<karen> I would take the exclamation point off of "Support us via PayPal or
credit card!" [13:55]