function autoIframe(frameId) {
            try {
                frame = document.getElementById(frameId);
                innerDoc = (frame.contentDocument) ? frame.contentDocument : frame.contentWindow.document;
                objToResize = (frame.style) ? frame.style : frame;
                objToResize.height = innerDoc.body.scrollHeight + 10;
            }
            catch (err) {
            }

        }
        window.onresize = function() { autoIframe('virtualmap') }
        window.onload = function() { autoIframe('virtualmap') }