/**

* iframe自适应高度，height为手动设置的最小高度

*/

function initIframeHeight(height){

var userAgent = navigator.userAgent;

var iframe = parent.document.getElementById("contentIframe");

var subdoc = iframe.contentDocument || iframe.contentWindow.document;

var subbody = subdoc.body;

var realHeight;

//谷歌浏览器特殊处理

if(userAgent.indexOf("Chrome") > -1){

realHeight = subdoc.documentElement.scrollHeight;

}

else{

realHeight = subbody.scrollHeight;

}

if(realHeight < height){

$(iframe).height(height);

}

else{

$(iframe).height(realHeight);

}

}