iframe ie下自动适应高度

function reinitIframe() {

var iframe = document.getElementById("frmContent");

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) { }

}

window.setInterval("reinitIframe()", 200);