The first method:
Second method:
js code :
//iframe adaptive height [under IE6 IE7 Test passed]
function reSetIframe(){
var iframe = document.getElementById("iframeId");
try{
var bHeight = iframe.contentWindow.document.body.scrollHeight;
var dHeight = iframe.contentWindow.document.documentElement.scrollHeight;
var height = Math.max(bHeight, dHeight);
iframe.height = height;
}catch (ex){}
}
html: