监听父窗口的变化自适应子页面的高度

<script>
/***********************监听iframe的onclik事件*****************/
var timeHandle;
function setEvent(){
try{
window.frames["childframe"].document.body.onclick=function(){
var f=document.getElementById('childframe');
f.style.height = f.contentWindow.document.body.scrollHeight + "px";
}

}catch(e){}
timeHandle=setTimeout(setEvent,200);
}
setEvent();

/*************************装载的时候自适应高度************************/
function resizeFrame(f) {
f.style.height = f.contentWindow.document.body.scrollHeight + "px";

}
</script>

<iframe id=childframe onload="resizeFrame(document.getElementById('childframe'))" scrolling="no" name=childframe src="yoursrc" width=100% height=100% frameborder=0 border=0 ></iframe>