function fixMargin() {
    document.getElementById('content').style.marginLeft = (screen.width - 800) / 2;
    var elem = document.getElementById('content');
    //alert(browser)
    elem.style.marginLeft = (screen.width - 1024) / 2;
    //alert(elem.style);
    //document.getElementById("content").style.marginLeft = document.getElementById("content").style.marginLeft + "px;";
}