function iecheck() {
    var ua = navigator.userAgent.toLowerCase();
    if (ua.indexOf('msie') != -1) {
        document.getElementById("iewarn").style.display='block';
        document.getElementById("iewarn").style.visibility='visible';
        document.getElementById("iewarn").style.height='100%';
        document.getElementById("iewarn").style.width='100%';
    }
}

function hide(what) {
    what.style.visibility='hidden';
    what.style.height='0px';
}