I got this link from a friend, acording to him it is the best of all the online translation services he tried (including google and babelfish)
http://www.ocn.ne.jp/translation/
it's alittle hard to understand it first as it is in japanese
but for url.. type in url in the textbox with the url text next to it and then select the 2nd radiobox from left and push the button
for text it's almoast the same but you fill in the text in the other textbox a bit down the page and select the 2nd radiobox from the left under this textbox and push the button under this textbox.
I hope I explained it somewhat ok.
edit. ops. you want it the other way aorund.. english to japanese.
then select the radiobox furthest to the left
edit2..
to help you even more the radioboxes are (from left to right)
eng2jpn | jpn2eng | kor2jpn | jpn2kor | chi2jpn | jpn2chi