Update mobilebone.js
Update mobilebone.js

event of 'popostate' won't delete page-element.
RyanTech/mobilebone,RyanTech/mobilebone,fanbbs/mobilebone,haner199401/mobilebone,chenfahuigithub/mobilebone,princewn/mobilebone,haner199401/mobilebone,hexiaoming/mobilebone,luck2011/mobilebone,chenfahuigithub/mobilebone,ysxlinux/mobilebone,princewn/mobilebone,chunqian/mobilebone,hexiaoming/mobilebone,Htmldog/mobilebone,chenfahuigithub/mobilebone,hhqqnu/mobilebone,chunqian/mobilebone,chunqian/mobilebone,Htmldog/mobilebone,hhqqnu/mobilebone,Htmldog/mobilebone,haner199401/mobilebone,luck2011/mobilebone,fanbbs/mobilebone,demifrost/js-frame-mobilebone.js,hexiaoming/mobilebone,RyanTech/mobilebone,hhqqnu/mobilebone,ysxlinux/mobilebone,ysxlinux/mobilebone,fanbbs/mobilebone,zhangxinxu/mobilebone,princewn/mobilebone,demifrost/js-frame-mobilebone.js,luck2011/mobilebone,demifrost/js-frame-mobilebone.js,zhangxinxu/mobilebone,zhangxinxu/mobilebone