I was working on a site plagued with random 404s from across the site. One specific type of 404 I was getting was that for paths without the trailing name after the last /.

For example

http://www.example.com/somepath/to/the/referer

and the 404 would be on

http://www.example.com/somepath/to/the/

http://developer.yahoo.com/performance/rules.html mentions that this could be caused by img tags with empty source attributes.

I was going through and finding faulty URLs and SRC attributes across the site and came across the lightboxImage tag created in both lightbox.js and lightbox_lite.js

I believe this would cause 404s in IE.

CommentFileSizeAuthor
#1 1042656_lightoboxImage_empty_src_attribute.patch995 byteszyxware
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zyxware’s picture

zyxware CreditAttribution: zyxware commented
FileSize
1042656_lightoboxImage_empty_src_attribute.patch995 bytes

Here is a patch for fixing this for the lightbox.js file. I see that the same issue exists in lightbox_lite.js. Since I don't use lightbox_lite somebody else will have to prepare and test the patch for that as well.