function setCookie( name, value, expires, path, domain, secure ) {
 var today = new Date();
 today.setTime( today.getTime() );
 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() : "" ) + //expires.toGMTString()
  ( ( path ) ? ";path=" + path : "" ) +
  ( ( domain ) ? ";domain=" + domain : "" ) +
  ( ( secure ) ? ";secure" : "" );
}

setLng=function(value){
 setCookie('site_lng', value, 100, '/' );
 window.location=window.location;
}