iframe크기 자동조절

//iframe크기 자동조절
function resizeIF(Id)
{
//alert("1"+Id);
        var obj = document.getElementById(Id);
        var Body;
        var H, Min;

        // 최소 높이 설정 (너무 작아지는 것을 방지)
        Min = 200;

        // DOM 객체 할당
        try
        {
                if (!document.all && obj.contentWindow.document.location.href

                        == 'about:blank') {
                        setTimeout("resizeIF('"+Id+"')", 10);
                        return;
                }

                Body = obj.contentWindow.document.getElementsByTagName('body');
    //alert("body==  "+Body[0]);
                Body = Body[0];

                if (this.Location != obj.contentWindow.document.location.href) {
                        H = Body.scrollHeight + 5;
                        obj.style.height =  (H<Min?Min:H) + 'px';

                        this.Location = obj.contentWindow.document.location.href;

      //alert("location==  "+this.Location);
                }
        }
        catch(e)
        {
  //alert("2"+e);
                setTimeout("resizeIF('"+Id+"')", 10);
                return;
        }

        setTimeout("resizeIF('"+Id+"')", 100);
}