There is at trick in notepad that allows you to find/replace quotation marks that are curly and switching them to the safe-straight kind that is websafe.
It takes a little bit of copy/paste technique, but it’s worth it if you have a huge script file.
Highlight the left quotation
go to edit>replace
put the left quotation that is curly and then simply type in a left quotation in the replace with field.
This should replace all of the curly left quotations with the right kind.
Repeat the process for the curly right quotations, as well as apostrophes and hyphens.
Hope this helps!