function toggle(element){
	e=document.getElementById(element);
        e2=document.getElementById(element+"-more");
        if (e.style.visibility=='visible'){
	    e.style.visibility='hidden';
	    e.style.display='none';
            e2.value="více...";
	} else {
	    e.style.visibility='visible';
	    e.style.display='block';
            e2.value="méně...";
	}
}