Small speedup for td search

We need to find the 'td' elements from that row. Old code checked all 'td's, and matched them to that row,
while this code finds the 'td's in the row.
On (really) large tables this also stops a stack-size problem:

    Uncaught RangeError: Maximum call stack size exceeded

Not completely sure about the minified, as I don't know how you minified it, but it's a small enough change to see what's going on. No version bump.