// display random / sub page image
		var imagenumber = 7	 ;
		var randomnumber = Math.random() ;
		var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;
		images = new Array
		images[1]  = "../../images/90/arches-90.jpg" // MV office building
		images[2]  = "../../images/90/ornate-1-90.jpg" // 
		images[3]  = "../../images/90/chapel-arch-3-90.jpg" // 
		images[4]  = "../../images/90/city-hall-90-1.jpg" // 
		images[5]  = "../../images/90/macarthur-park-90-1.jpg" // 
		images[6] = "../../images/90/varsity-90-1.jpg" // 
		images[7] = "../../images/90/pa-train-station-90-2.jpg" // 
		
		var image = images[rand1]