function swapHoroscope(horoscopeId) {
  for (var i=0; i<12; i++) {
	  $("#horoscope_" + i).hide();
  }
  
  $("#horoscope_" + horoscopeId).show();
  
  setCookie('horoscopeId', horoscopeId, 30);
}

function setCookie(name, value, expires, path, domain, secure) {
  // set time, it's in milliseconds
  var today = new Date();
  today.setTime( today.getTime() );

  /*
  if the expires variable is set, make the correct
  expires time, the current script below will set
  it for x number of days, to make it for hours,
  delete * 24, for minutes, delete * 60 * 24
  */
  if ( expires ) {
    expires = expires * 1000 * 60 * 60 * 24;
  }
  var expires_date = new Date( today.getTime() + (expires) );

  document.cookie = name + "=" +escape( value ) +
  ( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) +
  ( ( path ) ? ";path=" + path : "" ) +
  ( ( domain ) ? ";domain=" + domain : "" ) +
  ( ( secure ) ? ";secure" : "" );
}