The batch file -- which is named "download.bat" doesn't do well if it is saved somewhere with spaces in the folder name. For instance, D:\your folder name\jav-it. You can do two things here
move the jav-it folder somewhere where it's not in a folder which has spaces in the name, not even nested as in D\:folder one\folder\jav-it
Edit the batch file -- if you know how to do that, you're already advanced so i'll keep that short. change the %CD% (current directory parsers) to "%CD%". The thing basically errors because CMD expects something like "D:\your folder name\" instead of D:\your folder name.