$(document).ready(function(){

	//
	$('div#pageContent div.leftCenterColumn div.yellowBox').append('<span class="topLeft"></span>', '<span class="topRight"></span>', '<span class="bottomLeft"></span>', '<span class="bottomRight"></span>');

	//
	$("div#pageContent div.leftCenterColumn ul.slownik li").click(function(){
		$("div#pageContent div.leftCenterColumn ul.slownik *").removeClass("active");
		$(this).addClass("active");
	});

});