adjust the width and height of iframe

auto resize iframe.js

    function autoResize(id) {

        var newheight;
        var newwidth;
        var id = document.getElementById(id);

        newheight = id.contentWindow.document.body.scrollHeight;
        newwidth = id.contentWindow.document.body.scrollWidth;

        id.height = newheight + "px";
        id.width = newwidth + "px";
    }