function showDiv(id) {

	id = document.getElementById(id);
    var t = id.options[id.selectedIndex].value;
    
    if (t==1) {
	    document.getElementById('zaujem1').className = "active";
	    document.getElementById('zaujem2').className = "inactive";
	    document.getElementById('zaujem3').className = "inactive";
	}
	if (t==2) {
	    document.getElementById('zaujem1').className = "inactive";
	    document.getElementById('zaujem2').className = "active";
	    document.getElementById('zaujem3').className = "inactive";
	}
	if (t==3) {
	    document.getElementById('zaujem1').className = "inactive";
	    document.getElementById('zaujem2').className = "inactive";
	    document.getElementById('zaujem3').className = "active";
	}

}
function showAgenda(id) {

	id = document.getElementById(id);
	var t = id.value;

    if (t==1) {
	    document.getElementById('zaujem3').className = "active";
	}
	if (t==0) {
	    document.getElementById('zaujem3').className = "inactive";
	}

}