funny place caret hack in IE

hack.js

// I 替换
var span = goog.dom.createDom('span',{ innerText: element.nodeValue })
element.parentNode.replaceChild(span, element)
// II 测量
var clientRect = getElementClientRect(span)
// II 还原
span.parentNode.replaceChild(element, span)

var pad = goog.userAgent.VERSION === '8.0' ? 2 : 0
var range = document.selection.createRange()
range.moveToPoint(clientRect.left + clientRect.width + pad, clientRect.top)
range.select()

function getElementClientRect(element) {
      var rect = element.getBoundingClientRect()

      if (!rect.width) {
        // for ie7~8
        goog.object.extend(
            rect = goog.object.clone(rect),
            goog.style.getBorderBoxSize(element)
        )
      }

      return rect
}