Making hide url bar more usefull
Making hide url bar more usefull

Split url bar into an intial function, and a general use function
cached the scrollTop so that only needs to be detected once

h5bp/mobile-boilerplate,filtercake/mobile-boilerplate-timetable-3,globalepub/mobile-boilerplate,jamesandersen/jamesandersen.github.io,xzcb2008/mobile-boilerplate,Saajan/uber-mobile,globalepub/mobile-boilerplate,wjb12/mobile-boilerplate,texnixe/test,h5bp/mobile-boilerplate,COBSNAN/mobile-boilerplate,jamesandersen/jamesandersen.github.io,Cheeriohz/mobileWebPage,xieQin/mobile-boilerplate,cyprianos/bold,xieQin/mobile-boilerplate,fogbrain00/mobile-boilerplate,cyprianos/bold,xzcb2008/mobile-boilerplate,perfect-pixell/mobile-boilerplate,Saajan/uber-mobile,wjb12/mobile-boilerplate,perfect-pixell/mobile-boilerplate,COBSNAN/mobile-boilerplate,filtercake/mobile-boilerplate-timetable-3