can'；使用javascript无法访问DIV的节点内容

当使文本DIV可编辑时，我使用setEndOfContenteditable函数将光标放在文本的末尾

//Insert cursor at end of contentEditable element
function setEndOfContenteditable(contentEditableElement)
{
    var range,selection;
    if(document.createRange)//Firefox, Chrome, Opera, Safari, IE 9+
    {
        range = document.createRange();//Create a range (a range is a like the selection but invisible)
        range.selectNodeContents(contentEditableElement);//Select the entire contents of the element with the range
        range.collapse(false);//collapse the range to the end point. false means collapse to end rather than the start
        selection = window.getSelection();//get the selection object (allows you to change selection)
        selection.removeAllRanges();//remove any selections already made
        selection.addRange(range);//make the range you have just created the visible selection
    }
    else if(document.selection)//IE 8 and lower
    { 
        range = document.body.createTextRange();//Create a range (a range is a like the selection but invisible)
        range.moveToElementText(contentEditableElement);//Select the entire contents of the element with the range
        range.collapse(false);//collapse the range to the end point. false means collapse to end rather than the start
        range.select();//Select the range (make it the visible selection
    }
}

当我以前只有一个div时，其中的文本将非常适合：

setEndOfContenteditable(curObj);

curObj是包含文本的DIV

现在我已经切换到一种设计，在这种设计中，curObj-div仍然是一个框架，而包含实际文本的div位于框架内部。通常我这样做是为了到达（选择）jQuery代码中的内部div

var curObj = window.curObj;
var inner = '#' + $(curObj).attr("id") + ' .object_inner';
$(inner).doAllMyStuff;

但是，这不适用于这个特定的setEndOfContenteditable函数，我得到的错误是

Uncaught Error: NotFoundError: DOM Exception 8 

以及setEndOfContenteditable函数第7行的错误点：

range.selectNodeContents(contentEditableElement);//Select the entire contents of the element with the range

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啊，我试图将jQuery选择器传递给一个普通javascript函数（该函数需要一个原始DOM元素）。下面是一个解决方案，它获取原始DOM元素：

var spec = $(curObj).find('.object_inner');
setEndOfContenteditable(spec[0]);

特别感谢这家伙：