Many Warsaw Jewish vital records for 1858-1912 are now viewable
online, thanks to Poland's State Archives in Warsaw and National
Digital Archives. I do not know the extent of overlap with the
searchable indices on JRI-Poland, but it is probably substantial.

To view the images, first go to this list of groups of records, sorted by date:

http://szukajwarchiwach.pl/72/200/0/-/str/1/300?sort=4#tabJednostki

Note the last column on the right, "Number of scans." If that is 0,
there are no images available for the group.

Clicking the title of a group (e.g., "Akta malzenstw - cyrkul V") will
bring up an overview page, with a red tab at the top. Click the link
to the right of the red tab, "Digital copies." This will lead to a
group of thumbnail images, 15 per page by default.

Clicking on a thumbnail will enlarge it. On the enlarged image, there
is an icon near the bottom right that looks like a white rectangle on
a black circle -- clicking that will open a new window to display a
high-resolution image. Because of the size of the high-resolution
images, they might not be fully visible on your screen, but you can
click, hold, and drag them with your mouse to change the visible
region. To save a high-resolution image to your computer, click the
"Download" link below the image, in the bottom center.

I have not examined these carefully, and I regret that I am not able
to offer individual assistance.

Logan Kleinwaks
kleinwaks@alumni.princeton.edu
near Washington, D.C.