I wish it were possible for me to support the campaign, Stop the Money Pipeline, which aims to get banks to stop investing in fossil fuels. I can't, because its web site depends on nonfree Javascript code to the point where I cannot ethically refer anyone to it.

I would like ask them to change this, but the site shows no way to contact them — no email address, no phone number, no postal address, nothing.

Can anyone tell me a way to reach them?

In the mean time, they make one concrete recommendation that I can state here: move your money (and organizations' money) out of Chase, Wells Fargo, Citi and Bank of America.