Replace touch with active on touch devices

  # Converts :hover CSS to :active CSS on mobile devices.
  # Otherwise, when tapping a button on a mobile device, the button stays in
  # the :hover state until the button is pressed.
  #
  if 'ontouchstart' of document.documentElement
    sheetI = document.styleSheets.length - 1
    while sheetI >= 0
      sheet = document.styleSheets[sheetI]
      # Verify if cssRules exists in sheet and they are same origin
      # (Chrome throws an exception for cross-origin requests on stylesheets)
      try
        cssRules = sheet.cssRules
      catch e
        if e.name != 'SecurityError'
          throw e

      if cssRules
        # Loop through each rule in sheet
        ruleI = cssRules.length - 1
        while ruleI >= 0
          rule = cssRules[ruleI]
          # Verify rule has selector text
          if rule.selectorText
            # Replace hover psuedo-class with active psuedo-class
            rule.selectorText = rule.selectorText.replace(':hover', ':active')
          ruleI--
      sheetI--