function readCookie( name ) {
	var nameEQ = name + "=";
	var ca = document.cookie.split( ';' );
	for( var i = 0; i < ca.length; i++ ) {
		var c = ca[ i ];
		while( c.charAt( 0 ) == ' ' )
			c = c.substring( 1, c.length );
		if( c.indexOf( nameEQ ) == 0 )
			return c.substring( nameEQ.length, c.length );
	}
	return null;
}

function readQS( name ) {
	var p = window.location.search.substring( 1 ).split( "&" );
	for( var i = 0, len = p.length; i < len; i++ ) {
		var pos = p[ i ].indexOf( "=" );
		if( pos > 0 ) {
			if( p[ i ].substring( 0, pos ) == name ) {
				return p[ i ].substring( pos + 1 );
			}
		}
	}
	return false;
}

function showWarningIfNeeded() {
	if( !readCookie( 'nats' ) ) {
		var natsFound = false;
		var p = window.location.search.substring( 1 ).split( "&" );

		for( var i = 0; i < p.length && !natsFound; i++ ) {
			var pos = p[ i ].indexOf( "=" );
			if( pos > 0 ) {
				var pn = p[ i ].substring( 0, pos );
				var pv = p[ i ].substring( pos + 1 );
				switch( pn ) {
					case "nats":
						natsFound = true;
					break;
				}
			}
		}

		if( !natsFound ) {
			$.get(
				"/inl.warning/?referrer=" + escape( document.referrer ),
				function( data ) {
					$( document.body ).append( data );
					$( "#warningDisplay > .blocker:first" ).height( $( document ).height() );
				}
			);
		}
	}

}

$(document).ready(function(){
	showWarningIfNeeded();
});