[avatar_change] modified chg_btn_orig_bg get for ie 7,8
[avatar_change] modified chg_btn_orig_bg get for ie 7,8

miurahr/seahub,madflow/seahub,madflow/seahub,madflow/seahub,Chilledheart/seahub,miurahr/seahub,Chilledheart/seahub,miurahr/seahub,Chilledheart/seahub,madflow/seahub,Chilledheart/seahub,cloudcopy/seahub,cloudcopy/seahub,madflow/seahub,Chilledheart/seahub,cloudcopy/seahub,miurahr/seahub,cloudcopy/seahub