iframe自适应高度
<script>
function cif(id,url) {
var newPanle = document.createElement("div");
newPanle.setAttribute("id","panel-"+id);
var newFrame = document.createElement("iframe");
newFrame.setAttribute("name","frame-"+id);
newFrame.setAttribute("id","frame-"+id);
newFrame.setAttribute("src",url);
newFrame.width = "100%";
newFrame.scrolling = "no";
newFrame.frameBorder = 0;
newFrame.attachEvent('onload', function(){newFrame.style.height=parent.document.body.offsetHeight+'px';});
newPanle.appendChild(newFrame);
document.getElementById("active_panel").appendChild(newPanle);
}
</script>
<div id="active_panel"></div>
<input type="button" onclick="cif(1,'')" value="51js"/>