1. place panel to the right half window for better reading in vertical mode
1. place panel to the right half window
for better reading in vertical mode

2. change btn.png to be a localhost file

3. after i used a jquery selector to judge id last time,
the handian-btn shows up in vertical mode,
no need to change position attr to be fixed this time
it is ok with absolute attr

wisperwinter/handian-chrome-extension,wisperwinter/handian-chrome-extension