function rozsirujici_parametry(typ){
  //alert(typ);
  if(typ == "rozsirene_vyhledavani"){
		document.getElementById('search_hidden_1').className = "visible";
		document.getElementById('search_hidden_2').className = "visible";
		document.getElementById('search_hidden_3').className = "visible";
		document.getElementById('zobraz').className = "hidden";
		document.getElementById('skryj').className = "visible_block";
	}

	if(typ == "rozsirene_vyhledavani_skryj"){
    document.getElementById('search_hidden_1').className = "hidden";
		document.getElementById('search_hidden_2').className = "hidden";
		document.getElementById('search_hidden_3').className = "hidden";
		document.getElementById('zobraz').className = "visible_block";
		document.getElementById('skryj').className = "hidden";
	}
}