function changeTab( id ) {
	var thisID = id;
	var blockID = id + "_block";
	
	document.getElementById('austria').className = "";
	document.getElementById('germany').className = "";
	document.getElementById('switzerland').className = "";
	
	
	document.getElementById('austria_block').style.display = "none";	
	document.getElementById('germany_block').style.display = "none";
	document.getElementById('switzerland_block').style.display = "none";

	
	document.getElementById(thisID).className = "selected";
	document.getElementById(blockID).style.display = "block";
	
}