code: function jsbinShowEdit(options) {
    'use strict';
    if (window.location.hash === '#noedit') {return;}
  
    var moveTimer, over,
    doc = document,
    aEL = 'addEventListener',
    path = options.root + window.location.pathname,
    style = doc.createElement('link'),
    btn = doc.createElement('a');
  
    // Add button:
    btn.id = 'edit-with-js-bin';
    btn.href = path + (path.slice(-1) === '/' ? '' : '/') + 'edit';
    btn.innerHTML = 'Edit in JS Bin <img src="' + options['static'] + '/images/favicon.png" width="16" height="16">';
    doc.documentElement.appendChild(btn);
  
    // Style button:
    style.setAttribute('rel', 'stylesheet');
    style.setAttribute('href', options['static'] + '/css/edit.css');
    doc.documentElement.appendChild(style);
  
  
    // show / hide button:
    btn.onmouseover = btn.onmouseout = function() {
      over = !over;
      (over ? show : hide)();
    };
  
    function show() {
      clearTimeout(moveTimer);
      btn.style.top = '0';
      moveTimer = setTimeout(hide, 2000);
    }
  
    function hide() {
      if (!over) { btn.style.top = '-60px'; }
    }
  
    show();
    if (aEL in doc) {doc[aEL]('mousemove', show, false);}
    else {doc.attachEvent('mousemove', show);}
  }
docs: "Edit in JS Bin" button setup