function $(element) {
	if (arguments.length > 1) {
		for (var i = 0, elements = [], length = arguments.length; i < length; i++)
			elements.push($(arguments[i]));
		return elements;
	}
	if (typeof element == 'string')
		element = document.getElementById(element);
	return element;
}

function $A(iterable) {
	if (!iterable) return [];
	if (iterable.toArray) return iterable.toArray();
	else {
		var results = [];
		for (var i = 0, length = iterable.length; i < length; i++)
			results.push(iterable[i]);
		return results;
	}
}

function $F(element) {
	element = $(element);
	switch (element.tagName.toLowerCase()) {
		case 'input':
			switch (element.type.toLowerCase()) {
				case 'checkbox':
				case 'radio':
					return element.checked ? element.value : null;
				default:
					return element.value;
			}
		case 'textarea':
			return element.value;
		case 'select':
			if (element.multiple) {
				for (var i = 0, values = [], length = element.options.length; i < length; i++) {
					var opt = element.options[i];
					if (opt.selected) values.push(opt.value);
				}
				return values;
			} else {
				return element.options[element.selectedIndex].value;
			}
		default:
			return null;
	}
}

function $w(string) {
	return string ? string.replace(/^\s+|\s+$/g, '').split(/\s+/) : [];
}