function MyNumberToStrnig ( number )
{
  var num_str = '';

  if ( number < 10 )
  {
    num_str = '0';
  }

  return num_str + number;
}

// browser test:
browserName = navigator.appName;
browserVer  = parseInt(navigator.appVersion);
if ( browserName == "Netscape"                    && browserVer >= 3 ||
     browserName == "Microsoft Internet Explorer" && browserVer >= 4 ) version = "1";
else                                                                   version = "2";

// preload images:
if (version == "1")
{
  var len = 13;

  eaf_picture_names = new Array ( len );

  for ( i=0; i<len; i++ )
  {
      eaf_picture_names [i] = "./img/eaf/eaf" + MyNumberToStrnig ( i+1 ) + ".jpg";
  }
}

function GetRandomPictureName ()
{
  return eaf_picture_names [ Math.floor ( (eaf_picture_names.length - 0.01) * Math.random () ) ];
}
  
function EafPictureOnLoad ()
{
  if (version == "1")  { document.images['eaf_picture'].src = GetRandomPictureName (); }
}

function GetUrlParams ()
{
    var urlquery = location.href.split("?");
    if ( urlquery.length < 2 )
        return '#';

    return urlquery[1];
}