Custom cursor, mostly abandoned.

Made a custom crosshair cursor, reminiscent of what I remember from
Excel many years ago (a fat “+” with a shadow).  Had a bunch of trouble
getting it to work.  Eventually found the standard “cell” cursor style,
which is the same idea, but I don’t like it.  I’m checking in my
experiments with the custom cursor, in case I want them.  I’m also
checking in the Photoshop file, so you can see it.

The commented-out code, by the way, includes an img tag which I move
wherever the mouse is, when the user moves the mouse over cells in the
spreadsheet.  The problems (I’ve never done this before):  when I click
and drag, the system cursor appears, and the movement is pretty choppy.
 I’ve tried a bunch of versions, some of which were smooth, but I
haven’t yet found a version which is both smooth and consistently hides
the system cursor.

I also tried specifying my graphic as a custom CSS cursor, but it’s not
appearing in Chrome, even though Chrome successfully uses the custom
cursor shown in the w3schools example.  Maybe my .png file is too big?