iframe 高度自适应

iframe 设置

<iframe id="moduleTree" name="moduleTree" frameborder="0" align="top" scrolling="no" src="" width="177px" onLoad="iFrameHeight(this);"></iframe>

js

function iFrameHeight(o) {
		var name=o.name;
		var height=0;
		if(o.document){
			height=document.frames[name].document.body.scrollHeight
		}else{
			height=o.contentWindow.document.documentElement.scrollHeight;
		}
	
		
	
	      o.height =height;
		
	}   

ie/ff/chrome有效.