var ready = false;

addListener(window, 'load', initPage, false);


function addListener(element, type, expression, bubbling)
  {
    bubbling = bubbling || false;
    if(window.addEventListener)      // Standard 
      {
        element.addEventListener(type, expression, bubbling);
        return true;
        }
      else if(window.attachEvent)   // IE
            {
              element.attachEvent('on' + type, expression);
              return true;
              }
            else return false;
    }





function initPage()          
  {
    var ready = true;

    if (typeof alert_message == 'string' ) { if (alert_message != '' ) { window.alert(alert_message); alert_message = ''; }}

    if ((flashinstalled=='2') && (document.getElementById('flash_src')))
      {
        document.getElementById('flash_ban1').style.color = '#fff';
        //document.getElementById('flash_ban2').style.color = '#fff';
        sendRequest('GET', '/index.php?page=getcontent&typ=s', 'flash_src');
        }

    if (document.getElementById('content_admin'))
      {
        addListener(document.getElementById('seo1'), 'keypress', function(e) {checklink(e);}, false);
        addListener(document.getElementById('seo2'), 'keypress', function(e) {checklink(e);}, false);
        addListener(document.getElementById('seo3'), 'keypress', function(e) {checklink(e);}, false);
        }
    
    if (document.getElementById('login_id'))
      {
        document.getElementById('login_id').focus();
        document.getElementById('login_id').select();
        }
    }



function checklink(e)
  {
    e = e || window.event;
    var key = e.keyCode || e.which;

    chars1 = (key >= 48 && key <= 57);   // čísla
    chars2 = (key >= 97 && key <= 122);  // malá písmena
    chars3 = (key == 45  || key == 95);  // pomlčka & podtržítko
    chars4 = (key == 8 || key == 46 || key == 9 || key == 37 || key == 39);  // backspace, delete, tabulátor, šipka vlevo, šipka vpravo

    if (chars1 || chars2 || chars3 || chars4) return true;
      else 
        {
          if (window.event) {
            window.event.cancelBubble = true;
            window.event.returnValue = false; }
          if (e && e.preventDefault && e.stopPropagation) {
            e.preventDefault();
            e.stopPropagation(); }
          }
    }