var activePage = 'glowna-content';
var activeImg = 'menu_main';

function prepare(content){
	$('div#'+content).fadeOut(1);
	$('div#'+content).fadeIn("slow");
}
function show(newPage,newUrl){
	if(newPage != activePage){
		change(newUrl);
		$('div#'+activePage).fadeOut("slow",function(){
			$('div#oferta-content').fadeOut(1);
			$('div#wspol-content').fadeOut(1);
			$('div#przyklady-content').fadeOut(1);
			$('div#kontakt-content').fadeOut(1);
			$('div#glowna-content').fadeOut(1);
			$('div#'+newPage).fadeIn("slow");
		});	
		activePage = newPage;
	}
}

function fade(content){
	$('div#'+content).fadeOut("slow");
}
function change(newImg){
	$('img#'+activeImg).attr("src","images/"+activeImg+".jpg");
	$('img#'+newImg).attr("src","images/"+newImg+"2.jpg");
	activeImg = newImg;
}