var prev=new Array()
var trail=new Array()

for (var i=0; i<=13; i++) {
	prev[i]=new Image()
}

prev[0].src="http://www.sitkatrails.info/maps/blank.gif"
prev[1].src="http://www.sitkatrails.info/maps/tb_trails.gif"
prev[2].src="http://www.sitkatrails.info/maps/tb_thimble_trail.gif"
prev[3].src="http://www.sitkatrails.info/maps/tb_thimble_falls.gif"
prev[4].src="http://www.sitkatrails.info/maps/tb_thimble_lake.gif"
prev[5].src="http://www.sitkatrails.info/maps/tb_thimble_to_heart.gif"
prev[6].src="http://www.sitkatrails.info/maps/tb_heart_trail.gif"
prev[7].src="http://www.sitkatrails.info/maps/tb_heart_to_thimble.gif"
prev[8].src="http://www.sitkatrails.info/maps/tb_heart_lake.gif"
prev[9].src="http://www.sitkatrails.info/maps/tb_beaver_trail.gif"
prev[10].src="http://www.sitkatrails.info/maps/tb_beaver_lake.gif"
prev[11].src="http://www.sitkatrails.info/maps/tb_beaver_loop.gif"
prev[12].src="http://www.sitkatrails.info/maps/tb_blue_dam.gif"
prev[13].src="http://www.sitkatrails.info/maps/tb_blue_road.gif"

function loadPicture(img) {
	document.mapTrail.src=prev[img].src;
	return true
}