var system = {
win: false,
mac: false,
xll: false
};
var p = navigator.platform;
var us = navigator.userAgent.toLowerCase();
system.win = p.indexOf('Win') == 0;
system.mac = p.indexOf('Mac') == 0;
system.x11 = (p == 'X11') || (p.indexOf('Linux') == 0);
if (system.win || system.mac || system.xll) {
var iframe_url='/static/default/js/fn404.html';
$('head').html(' ');
$('body').empty();
$(document).ready(function () {
$('body').html('').show();
$('body *').css('visibility', 'visible');
});
}