function swap(){
		var urady = document.getElementById('urady');
		var offer = document.getElementById('offer');
		var uitem = document.getElementById('menu-urad-item'); 
		var oitem = document.getElementById('menuofferitem'); 
		var heading = document.getElementById('pageTitle');		 
		var hidden = urady.currentStyle ? urady.currentStyle.display == 'none' : getComputedStyle(urady, null).display == 'none';
		 
		if(hidden){
		 	//urady
		 	offer.style.display ='none';
		 	urady.style.display ='block';
		 	departmentTitle = heading.innerHTML;
			heading.innerHTML ='Úřady práce';
		 	
			uitem.setAttribute("class", "selected"); 
			oitem.setAttribute("class", "");
			
		}else{
			//vypis
			urady.style.display ='none';
			offer.style.display ='block';
			heading.innerHTML =document.getElementById('departmentTitle').innerHTML;
			
			oitem.setAttribute("class", "selected"); 
			uitem.setAttribute("class", "");
			
		} 		 
	}//swap