function asyncLoadScript(script) {
    var e = document.createElement('script'); e.type = 'text/javascript'; e.async = true;
	e.src = script;
	document.getElementsByTagName('head')[0].appendChild(e);
}

function asyncLoadCSS(css, media) {
    var e = document.createElement('link'); e.type = 'text/css'; e.rel='stylesheet'; e.async = true;
	e.href = css;
    if(media) e.media = media;
	document.getElementsByTagName('head')[0].appendChild(e);
}