能否实现的问题

1<div contenteditable="">
2<img src="http://expert.csdn.net/images/csdn.gif"/>
3</div>

以上代码在浏览器上运行时可改变大小，能否在改变大小时在一个input中显示此图片的大小。好象onchange无用。
---------------------------------------------------------------

1<div contenteditable="">
2<img border="0" onpropertychange="txt.value='宽: '+this.clientWidth+' 高: '+ this.clientHeight" src="http://expert.csdn.net/images/csdn.gif"/>
3</div>

1<input name="txt"/>

---------------------------------------------------------------

1<script>   
2function window.onload()   
3{   
4a1.value='width:'+e1.width+' height:'+e1.height   
5}   
6</script>

1<div contenteditable="">
2<img id="e1" onpropertychange="a1.value='width:'+this.width+' height:'+this.height" src="http://www.5inet.net/bbs/images/forum_logo.jpg"/>
3</div>

1<input name="a1"/>

---------------------------------------------------------------

1<input style="gorush:expression(value=t.offsetWidth+'*'+t.offsetHeight)"/>

1<div contenteditable="">
2<img id="t" src="http://expert.csdn.net/images/csdn.gif"/>
3</div>