$("#nh_user_tx").replaceWith('<%= image_tag(url_to_avatar(@user), :id=>'nh_user_tx',:style=>"width:78px;height:78px;overflow:hidden",:alt=>"头像") %>');
$("#nh_user_logo").replaceWith('<%= image_tag(url_to_avatar(@user), :id=>'nh_user_logo',:width =>"40",:height => "40",:alt=>"头像") %>');
hideModal();