ghusse/jQRangeSlider — pull request #178 by mcauer (2014-07-31 15:35:20+00:00)
Title: Update jQDateRangeSlider.js

Ruler isn't working with negative Dates (eg. new Date (-400,0,1)) in Firefox.
Creating a new Date with a negative Date as parameter causes an "Invalid Date" in Firefox.
Therfore I changed the parmeter to use valueOf().