kimhogeling

/**
 * The command supertype, which is inherited by subtype commands.
 * @constructor
 * @param {type} normalAction The normal action.
 * @param {type} undoAction The opposite of the normal action.
 * @param {type} actionValue The value, which will get passed to the action.
 * @returns {Command}
 */
function Command(normalAction, undoAction, actionValue) {
    this.execute = normalAction;

iimos

function xpath(el) {
  if (typeof el == "string") return document.evaluate(el, document, null, 0, null)
  if (!el || el.nodeType != 1) return ''
  if (el.id) return "//*[@id='" + el.id + "']"
  var sames = [].filter.call(el.parentNode.children, function (x) { return x.tagName == el.tagName })
  return xpath(el.parentNode) + '/' + el.tagName.toLowerCase() + (sames.length > 1 ? '['+([].indexOf.call(sames, el)+1)+']' : '')
}

// Usage: