function hide(what) {
        /*var menu_alf = new Array();
        var menu_mng = new Array();
        for(i=1;i<10; i++) {
          menu_alf[i] = document.getElementById('alf'+i);
          if(what == 'all' || what == 'alf') {
		        menu_alf[i].style.display = 'none';
		}	
          menu_mng[i] = document.getElementById('mng'+i);
          if(what == 'all' || what == 'mng') {
	         menu_mng[i].style.display = 'none'; 
		}
        }*/
        menu_alf = document.getElementById('alf');
        menu_mng = document.getElementById('mng');
        if(what == 'all' || what == 'alf') {
		        menu_alf.style.display = 'none';
		}
		if(what == 'all' || what == 'mng') {
	         menu_mng.style.display = 'none'; 
		}
      }
      function rozbal(what) {
        menu_alf = document.getElementById('alf');
        menu_mng = document.getElementById('mng');
        if(what == 'alf') {
		        menu_alf.style.display = 'block';
		        menu_mng.style.display = 'none';
		}
		if(what == 'mng') {
	         menu_mng.style.display = 'block';
	         menu_alf.style.display = 'none';
		}
		/*var menu_alf = new Array();
        var menu_mng = new Array();
        for(i=1;i<10; i++) {
          menu_alf[i] = document.getElementById('alf'+i);
          menu_mng[i] = document.getElementById('mng'+i);
        }
        if (id=='alf') {
          for(i=1;i<10; i++) {
            menu_alf[i].style.display = 'block'; 
            menu_mng[i].style.display = 'none'; 
          }
        }
        else {
          for(i=1;i<10; i++) {
            menu_alf[i].style.display = 'none'; 
            menu_mng[i].style.display = 'block'; 
          }       
        }*/
      }