jQuery.fn.showLoadScreen = function( settings ) {
    settings = jQuery.extend( {
        message: 'De wijzigingen worden doorgevoerd. Even geduld a.j.b.',
		imgUrl: '/uploads/f6/5a/f65aeed0c9c73d560878ec4aaf42b414/loading.gif',
		duration: 4000
    }, settings );
    var base = $(this);
	var parentHeight = base.height();
	var overlay = $('<div id="loading"><div><img src="' + settings.imgUrl + '" /><p>' + settings.message + '</p></div></div>');
	overlay.css('height',parentHeight);
	base.append(overlay);
	timeoutId = window.setTimeout( function() {
		overlay.fadeOut( 600, function() { overlay.remove(); });
	}, settings.duration);
}