   lparen: (opts)->
     @button({
       value: '('
-      class: 'jc--button jc--button-other jc--button-parentheses'
+      class: 'jc--button jc--button-other jc--button-rParen'
     }, opts)
 
   rparen: (opts)->
     @button({
       value: ')'
-      class: 'jc--button jc--button-other jc--button-parentheses'
+      class: 'jc--button jc--button-other jc--button-lParen'
     }, opts)
 
   pi: (opts)->

    @button({
      value: 'exponent'
      label: "#{base}<sup>#{power}</sup>"
      class: 'jc--button jc--button-other jc--button-exponent'
    }, opts)

  root: (opts)->
    degree = if opts.degree then "<sup>#{opts.degree}</sup>" else ""
    radicand = opts.radicand || 'x'

    @button({
      value: 'root'
      label: "#{degree}&#x221a;#{radicand}"
      class: 'jc--button jc--button-other jc--button-root'
    }, opts)

  # EQ builder vars

  addition: (opts)->
    @button({
      value: '+'
      class: 'jc--button jc--button-operation jc--button-add'
    }, opts)

  subtraction: (opts)->
    @button({
      value: '-'
      label: '&#x2212;'
      class: 'jc--button jc--button-operation jc--button-subtract'
    }, opts)

  multiplication: (opts)->
    @button({
      value: '*'
      label: '&#xd7;'
      class: 'jc--button jc--button-operation jc--button-multiply'
    }, opts)

  division: (opts)->
    @button({
      value: '/'
      label: '&#xf7;'
      class: 'jc--button jc--button-operation jc--button-divide'
    }, opts)

  equals: (opts)->
