Justify text if hyphens:auto is supported

justify.js

var addStyleSheet = document.createStyleSheet || function(styles){
  var css = document.createElement('style');
  css.setAttribute("type","text/css");
  css.appendChild(document.createTextNode(styles));
  document.getElementsByTagName('head')[0]).appendChild(css);
}

function isHyphensAutoSupported(result){
  try {
    var
      d = document,
      b = d.body,
      container = d.createElement('div'),
      div1 = d.createElement('div'),
      div2 = d.createElement('div'),
      span1 = d.createElement('span'),
      span2 = d.createElement('span'),
      divStyle1 = div1.style,
      divStyle2 = div2.style,
      text = 'Antidisestablishmentarianism',
      cssText
        = 'position:absolute;top:0;left:0;width:5em;'
          + 'text-align:justify;text-justification:newspaper;';

    divStyle1.cssText = cssText;
    divStyle2.cssText
      = cssText
        + '-moz-hyphens:auto;-webkit-hyphens:auto;'
        + '-o-hyphens:auto;-ms-hyphens:auto;hyphens:auto;';

    span1.innerHTML = text;
    span2.innerHTML = text;

    div1.appendChild(span1);
    div2.appendChild(span2);
    container.appendChild(div1);
    container.appendChild(div2);
    b.insertBefore(container, b.firstElementChild || b.firstChild);

    result =
      span1.offsetHeight != span2.offsetHeight
        || span1.offsetWidth != span2.offsetWidth;

    b.removeChild(container)
  } catch(e){}

  return result
}

// if hyphens: auto is supported, then justify text
isHyphensAutoSupported() && addStyleSheet('p{text-align:justify}')