ps-hide-signin.js

/* Toggle Login */
function hideLogin(isHidden) {
	if (isHidden) {
		document.getElementById('loginbox').style.display = "none";
	} else {
		document.getElementById('loginbox').style.display = "block";
	}
}

/* define a handler */
function doc_keyUp(e) {
/* http://www.javascripter.net/faq/keycodes.htm */
	if (e.ctrlKey && e.keyCode == 32) {hideLogin(false);} 	/* Ctrl+Space */
}

/* register the handler */
document.addEventListener('keyup', doc_keyUp, false);