function show_output(vystup,txt) {
 var vystupDom = document.getElementById(vystup);
 vystupDom.innerHTML += txt;
}
function erase_output(vystup) {
 var vystupDom = document.getElementById(vystup);
 while(vystupDom.hasChildNodes()) vystupDom.removeChild(vystupDom.childNodes[0]);
 return false;
}
function show_error(txt) {
 alert(txt);
 return true;
}

function get_users(
 vystup,
 page,
 page_archiv,
 data_limit,
 data_sort,
 sid
) {
 var hlavicka = document.getElementsByTagName('head')[0];
 var dataLoader = document.getElementById('scriptLoader');
 if(dataLoader) hlavicka.removeChild(dataLoader);
 script = document.createElement('script');
 script.id = 'scriptLoader';
 script.src = '/user/handler.php?vystup='+vystup
 +'&page='+page
 +'&page-archiv='+page_archiv
 +'&limit='+data_limit
 +'&orderby='+data_sort
 +'&r='+Math.random()
 +'&'+sid;
 x = document.getElementsByTagName('head')[0];
 x.appendChild(script);
 return false;
}

function user_orderby(
 pole,
 vystup,
 page,
 page_archiv,
 data_limit,
 data_sort,
 sid
) {
 var orderby = document.getElementById(pole).options[document.getElementById(pole).selectedIndex].value;
 if (orderby > "") {
  //top.document.location.replace(stranka);
  get_users(
   vystup,
   page,
   page_archiv,
   data_limit,
   orderby,
   sid
  )
 }
 return false;
}