使用jQuery不判断浏览器高度解决iframe自适应高度问题

<iframe src="test.html" id="main" width="700" height="300" frameborder="0" scrolling="auto"></iframe>

//注意：下面的代码是放在和iframe同一个页面调用
$("#main").load(function(){
var mainheight = $(this).contents().find("body").height()+30;
$(this).height(mainheight);
});

//注意：下面的代码是放在test.html调用
$(window.parent.document).find("#main").load(function(){
var main = $(window.parent.document).find("#main");
var thisheight = $(document).height()+30;
main.height(thisheight);
});

//公共方法：设置iframe的高度以保证全部显示数据
//function SetPageHeight() {
//    var iframe = getUrlParam('ifname');
//    var myiframe = window.parent.document.getElementById(iframe);
//     iframeLoaded(myiframe);
//}
var iframeLoaded = function (iframe) {
    if (iframe.src.length > 0) {
        if (!iframe.readyState || iframe.readyState == "complete") {
            var bHeight =
            iframe.contentWindow.document.body.scrollHeight;
            var dHeight =
            iframe.contentWindow.document.documentElement.scrollHeight;
            var height = Math.max(bHeight, dHeight);
            iframe.height = height;
        }
    }
}
//分页时重新设置 iframe 高度 ； 修改后：iframe.name = iframe.id
var reSetIframeHeight = function()
{
    try {
        var oIframe = parent.document.getElementById(window.name);
        oIframe.height = 100;
        iframeLoaded(oIframe);
    }
    catch (err)
    {
        try {
         parent.document.getElementById(window.name).height = 1000;
          } catch (err2) { }
    }
}