var popup;

function openPopup(action, width, height) {
	if (popup) {
		popup.close();
	}
	popup = window.open('index.php?action=' + action, action, 'width=' + width + ', height=' + height + ', left=20, top=20, scrollbars=yes');
	popup.focus();
}

function openPasswordLost() {
    openPopup('pwlost', '400', '250');
}

function openRegister() {
    openPopup('register', '533', '480');
}

function openImprint() {
    openPopup('impressum', '533', '480');
}

function openInfo() {
    openPopup('info', '533', '480');
}

function openProfile() {
    openPopup('edit', '533', '480');
}

function openVideo() {
    if (popup) {
        popup.close();
    }
    popup = window.open('video-tutorial.html', 'video', 'width=720, height=403, left=20, top=20, scrollbars=yes');
    popup.focus();
}