Single Quotes and Javascript

Embedded javascript commands work, but when edited, all the quotes are converted to ’ 's - ruining the javascript because of this line:
(87 in /fckeditor.js)
text = text.replace(/'/g, "’") ;

...

text = text.replace(/'/g, "\'") ; // ’

solves this problem, but I wonder that it's been changed away from a \' to ’ for a reason that I'm missing.

ash at theleys dot net