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";
	}

}


function show_hide_fak(divName, show_or_hide) {
	if (divName && document.getElementById(divName)) {
	 if (show_or_hide == 0) { 
    document.getElementById(divName).className = "hidden_div"; 
    document.getElementById('fak_ulica').className = "";
    document.getElementById('fak_psc').className = "";
    document.getElementById('fak_mesto').className = ""; 
    
  }
	 if (show_or_hide == 1) { 
   document.getElementById(divName).className = "visible_div"; 
    document.getElementById('fak_ulica').className = "A_required";
    document.getElementById('fak_psc').className = "A_required";
    document.getElementById('fak_mesto').className = "A_required";    
   }	
	}
}