Bug differents between packed and unpacked version

[sanderbee]

parallex.min.js didn't work for me on the IPad. The problem was that the background image that isset when using a IPad is encoded (backgroundImage:"url("+encodeURIComponent(this.imageSrc)+")) in the packed version, but not in the unpacked version. Removing the encode function fixed my problem.

[mikegreiling]

sorry about that... I mindlessly merged a pull request without thinking about the minified js. should be fixed now.