Password Protect Dropbox folder

I have dropbox installed on my computer and would like to find a way to require a password to open the folder. I've seen various things online suggesting an encrypted dmg but that doesn't seem to be the proper solution in this case. I need it to be so that the folder remains as it is just with a password attached to it. Is there a command that can be applied to accomplish this in terminal or some kind of script?

 

i came across this applescript on another forum that is supposed to be attached as a folder action but in the applescript editor it gives the error "expected end of line but found unknown token". Using a script sounds like a great idea but I'm not too familiar with applescript. If someone can see the error in the script that would be fantastic and i'll give it a try

on opening folder This_Folder
tell application "Finder"

set dialogresult to display dialog "Please enter the password to access folder:

" & This_Folder & "" buttons {"Ok"} default button 1 default answer " "

set PWText to the text returned of dialog result

if not PWText = "Password here" then

close folder This_Folder

beep 3

display dialog "The password entered is incorrect" buttons {"Doh!"} default button 1

end if
end tell
end opening folder


thanks