Fixed a slide transition bug in default theme js
Fixed a slide transition bug in default theme js

adamzap/landslide,n1k0/landslide,exciteresearch/landslide,kwangkim/landslide,netantho/epicslide,ptisserand/landslide,exciteresearch/landslide,ionelmc/python-darkslide,ionelmc/python-darkslide,exciteresearch/landslide,adamzap/landslide,ptisserand/landslide,ptisserand/landslide,netantho/epicslide,kwangkim/landslide,adamzap/landslide,n1k0/landslide,kwangkim/landslide,ionelmc/python-darkslide