function $() {
	var elements = new Array();
	for (var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);
		if (arguments.length == 1)
			return element;
		elements.push(element);
	}
	return elements;
}
function toggle(obj) {
	var el = $(obj);
	el.style.display = (el.style.display != 'none' ? 'none' : '' );
}