I also notice code:157 error with babelfish JP translator,
http://members.sitegadgets.com/insidious_plots/board.html
Maybe try this new japanese to English bookmarklet
When you use it, you'll see two pull down menu, the left one is for different
font color in English,
The right pull down menu, if click the the top option, the entire page is in
English, second option and it will change back Japanese text on top, English
below.

Look at the bookmarklet, If you change "langpair=2,1" to 1,2 and it will
translate English TO Japanese .