function setCookie(name, value, expires, path, domain, secure) {
  var curCookie = name + "=" + escape(value) +
      ((expires) ? "; expires=" + expires.toGMTString() : "") +
      ((path) ? "; path=" + path : "") +
      ((domain) ? "; domain=" + domain : "") +
      ((secure) ? "; secure" : "");
  document.cookie = curCookie;
}

function setFrontpage( url )
{
	if ( url != 'http://www.trendomierz.pl/' && url != 'http://www.trendomierz.net/' ) {
		date = new Date();
		date.setTime( date.getTime() + ( 3600 * 24 * 365 ) );
		setCookie( 'mainpage_link', url, date, '/' );
		alert( 'Strona startowa ustawiona na\n' + url );
	} 
}

function showBest( aDiv, aNum )
{
	arr = new  Array( 1, 7, 30 );
	for ( a in arr )
		$(aDiv+arr[a]).style.display = ( aNum == arr[a] ) ? 'block' : 'none';
}