window.onload = function() {
    $(".lightbox_foto").lightBox({fixedNavigation:false});

    targetBlank(["virushka_link"]);

}

function targetBlank(idecka) {
    for (var i = 0; i < idecka.length; i++) {
        var elem = document.getElementById(idecka[i]);

        if (elem != null) {
            elem.onclick = function(e) {
                window.open(this.href, "new_"+ i);
                return preventDefaultAction(e);
            }
        }
    }
}



function preventDefaultAction(e) {
  if (e && e.preventDefault) {
      e.preventDefault;
  } else {
      window.event.returnValue = false;
  }
  return false;
}



// nastaví výběr selectboxu podle hodnoty value
function setSelectedByValue(selectbox, seekValue) {
    if (selectbox == null || typeof selectbox == "undefined")
        return false;
    
    for (var i=0; i < selectbox.length; i++) {
        if (selectbox[i].value == seekValue) {
            selectbox[i].selected = true;
            
            return true;
        }
    }
    
    return false;
}


function ajaxExecute(idecko, script, vars, action) {
    vars = vars || null;

    var httpp = getHTTPObject();

    httpp.onreadystatechange = function() {
      if (httpp.readyState == 4) {
      
        if (idecko != "") {
            document.getElementById(idecko).innerHTML = httpp.responseText;
        } else {
            return httpp.responseText;
        }
        
        if (typeof action != "undefined") {
            return action();
        }

      }
    }
    
    httpp.open('POST', script, true);
    httpp.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
    httpp.send(vars);
    
    
}



// ajax object
function getHTTPObject() {
  var request = false;
    try {
      request = new ActiveXObject('Msxml2.XMLHTTP');
    }
    catch (err2) {
      try {
        request = new ActiveXObject('Microsoft.XMLHTTP');
      }
      catch (err3) {
		    try {
          request = new XMLHttpRequest();
		    }
		    catch (err1) {
          request = false;
		    }
      }
    }
    return request;
}