function getBrowser() {
  
  if (Prototype.Browser.IE)
    return "Internet Explorer";
  else if (Prototype.Browser.Opera)
    return "Opera";
  else if (Prototype.Browser.WebKit)
    return "Safari/Chrome";
  else if (Prototype.Browser.Gecko)
    return "Firefox";
  else if (Prototype.Browser.MobileSafari)
    return "iPhone-Browser";
  else
    return "unbekannt";
  
}


function getOS() {
  if (navigator.appVersion.indexOf("Win")!=-1) 
    return "Microsoft Windows";
  else if (navigator.appVersion.indexOf("Mac")!=-1) 
    return "MacOS";
  else if (navigator.appVersion.indexOf("X11")!=-1) 
    return "UNIX";
  else if (navigator.appVersion.indexOf("Linux")!=-1) 
    return "Linux";
}



function add_browser_version() {
  
  if ($('browser_version').value == '') {
    $('browser_version').value = getBrowser() + " unter " + getOS();
  }
  
  try {
    if($('browser_version').value == getBrowser() + " unter " + getOS()) {
      $('browser_version').setStyle('color: #CCC;');
    } else {
      $('browser_version').setStyle('color: #000;');
    }
  } catch(e) {}
  
}


function check_form() {
  
  
  if($('eilt').checked == true) {
    
      Lightview.show({ href: 'eilt_warnung', rel: 'inline', options: { width:500, height: 170} });
    
  return false;
  }
  
  
}

function help_message() {

	Lightview.show({ href: 'help_message', rel: 'inline', options: { width:550, height: 200} });

}