Sorry for late reply your message. Anyway, as i said previously, you will need to make several change on your code to make it works.
Or you can place those code (without any changes) on this file jkreativ-themes/js/internal/jquery.jlanding.js and paste your code above on line 559. Then copy all content on those file, and go to this file jkreativ-themes/js/internalmin/jquery.jlanding.js replace all content on this file. (overwrite this file into content of previously edited file)