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;
}

window.onload = function(){
	$('home').onmouseover=function(){ $('home').src = 'assets/images/home_over.jpg'; };
	$('home').onmouseout=function(){ $('home').src = 'assets/images/home.jpg'; };
	$('films').onmouseover=function(){ $('films').src = 'assets/images/films_over.jpg'; };
	$('films').onmouseout=function(){ $('films').src = 'assets/images/films.jpg'; };
	$('radio').onmouseover=function(){ $('radio').src = 'assets/images/radio_over.jpg'; };
	$('radio').onmouseout=function(){ $('radio').src = 'assets/images/radio.jpg'; };
	$('central').onmouseover=function(){ $('central').src = 'assets/images/central_over.jpg'; };
	$('central').onmouseout=function(){ $('central').src = 'assets/images/central.jpg'; };
};