def glyph(name, size = nil)
      size = size.to_s.downcase
      if %w(small smaller big bigger).include?(size)
        size = ' glyph-' + size
      else
        size = ''
      end
      "<i class=\"glyphicon glyphicon-#{h name}#{size}\"></i>".html_safe
    end
def glyph(name, size = nil)
      size = size.to_s.downcase
      if %w(small smaller big bigger).include?(size)
        size = ' glyph-' + size
      else
        size = ''
      end
      "<i class=\"glyphicon glyphicon-#{h name}#{size}\"></i>".html_safe
    end
Creates a glyph icon using the specified +name+ and +size+.

 The +size+ can be nil, :small, :smaller, :big, or :bigger.
 The default size is nil.