var tourNdx = 0;
var tourItems;
var tourTimer;
var tourDelay = 1000 * 5;

$( window ).load ( onInitTour );

function onInitTour ( ) {
	tourItems = $('#tour span');
		
	tourTimer = setTimeout ( showNextTourItem, tourDelay );
	
}


function showTourItem ( ndx ) {

	
	tourNdx = ndx;
	
	var x = 1;
		
	for ( i = 0; i < tourItems.length; i ++ ) {
	
		var d = tourItems.eq ( i );
						
		d.stop ( ).animate ( { opacity: ( i == ndx )? 0: 1 }, 500 );
		d.stop ( ).animate ( { opacity: ( i == ndx )? 1: 0 }, 500 );
		
		
	}
	
}

function showNextTourItem ( ) {
	
	clearTimeout ( tourTimer );
	
	tourNdx ++;
	
	if ( tourNdx >= tourItems.length )
		tourNdx = 0;
	
	showTourItem ( tourNdx );
	
	tourTimer = setTimeout ( showNextTourItem, tourDelay );
}