function showMessage(id) {
	switch(id){
		  		case 1: { document.getElementById("pierwszy").style.display = "block";
							document.getElementById("drugi").style.display = "none";
							document.getElementById("trzeci").style.display = "none"; 
							break;}
		  		case 2: { document.getElementById("pierwszy").style.display = "none";
							document.getElementById("drugi").style.display = "block";
							document.getElementById("trzeci").style.display = "none"; 
							break;}
		  		case 3: { document.getElementById("pierwszy").style.display = "none";
							document.getElementById("drugi").style.display = "none";
							document.getElementById("trzeci").style.display = "block"; 
							break;}							
		    	}
		 }