message: Fix dragAndDropToObject error on chrome
diff: @@ -385,8 +385,14 @@ BrowserBot.prototype.triggerDragEvent = function(element, target) {
  } \
  simulateDragDrop(document.evaluate('" + getXpathOfElement(element) + "', document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue, document.evaluate('" + getXpathOfElement(target) + "', document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue);\
  ";
  - this.browserbot.getCurrentWindow().eval(script);
  + var win = this.browserbot.getCurrentWindow();
  + var doc = win.document;
  + var scriptTag = doc.createElement("script");
  + scriptTag.type = "text/javascript";
  + scriptTag.text = script;
  + doc.body.appendChild(scriptTag);
  };
  +
  BrowserBot.prototype._windowClosed = function(win) {
  try {
  var c = win.closed;
  