if (window.XMLHttpRequest) {
// IE 7, mozilla, safari, opera 9
} else {
document.getElementById( 'container' ).style.display = "none";
document.write("<h1>YOU ARE USING A CRAPPY BROWSER. PLEASE UPGRADE TO FIREFOX!</h1>");
}
//if (navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion < "7.0"){
//}