iframe自动高度 12306

//12306 iframe自动高度

function doIframe() {

o = document.getElementsByTagName('iframe');

for ( var i = 0; i < o.length; i++) {

if (/\bautoHeight\b/.test(o[i].className)) {

setHeight(o[i]);

addEvent(o[i], 'load', doIframe);

}

}

}

function setHeight(e) {

// 目前测试的ie8、firefox3.6.3、google、搜狗浏览器都可以使用

try {

var height = e.contentWindow.document.body.scrollHeight;

if (height < 300) {

height = 300;

}

e.height = height + 30;

var ictheight = height + 80;

if(userAgent() != "ie9"){

document.getElementById('ictiframe').src = "http://www.12306.cn/mormhweb/ggxxfw/wbyyzj/201105/t20110529_1905.jsp?height="

+ ictheight;

}

} catch (ex) {

e.height = 710;

if(userAgent() != "ie9"){

document.getElementById('ictiframe').src = "http://www.12306.cn/mormhweb/ggxxfw/wbyyzj/201105/t20110529_1905.jsp?height=" + 780;

}

}

}

function addEvent(obj, evType, fn) {

if (obj.addEventListener) {

obj.addEventListener(evType, fn, false);

return true;

} else if (obj.attachEvent) {

obj.detachEvent("on" + evType, fn);

var r = obj.attachEvent("on" + evType, fn);

return r;

} else {

return false;

}

}

function userAgent() {

var ua = navigator.userAgent;

ua = ua.toLowerCase();

var match = /(webkit)[ \/]([\w.]+)/.exec(ua) ||

/(opera)(?:.*version)?[ \/]([\w.]+)/.exec(ua) ||

/(msie) ([\w.]+)/.exec(ua) ||

!/compatible/.test(ua) && /(mozilla)(?:.*? rv:([\w.]+))?/.exec(ua) || [];

// 如果需要获取浏览器版本号：match[2]

if(match[1] == "msie"){

if (parseInt(match[2]) === 7) // ie7

{

if(ua.indexOf("trident/5.0") != -1){// ie9 此处为当ie9处于兼容模式下时的情况

return "ie9";

}else{

return match[1];

}

}else if (parseInt(match[2]) === 9) // ie9

{

return "ie9";

}else{

return match[1];

}

}else{

return match[1];

}

}

if (document.getElementById && document.createTextNode) {

addEvent(window, 'load', doIframe);

}