iframe 随内容自适应高度

兼容性好的

html代码：

<iframe src="enterprise/enter_edit.aspx" id="mainframe" frameborder="0" name="main"

                        onload="resize()" onreadystatechange="resize()" style="width: 100%; height: 100%;" border="0"></iframe>

JS代码：

<script type="text/javascript">

        //iframe自适应高度的函数

        var oTime = null;

        function resize() {

            if (oTime) {

                clearTimeout(oTime);

            }

            oTime = setTimeout(reset, 0);

        }

        //iframe自适应高度的函数

        function reset() {

            var frame = document.getElementById("mainframe");

            var outHeight = frame.offsetHeight;

            var inHeight = frame.contentWindow.document.body.scrollHeight;

            if (outHeight < inHeight) {

                frame.style.height = (inHeight + 10) + "px";

            } else if (inHeight > 650) {

                frame.style.height = (inHeight + 10) + "px";

            } else {

                frame.style.height = "750px";

            }

        }

    </script>

jquery代码：

<script type="text/javascript">

    //iframe 随内容自适高度

        $("#mainframe").load(function () {

            var mainheight = $(this).contents().find("body").height() + 30;

            $(this).height(mainheight);

        });

    </script>