var images = new Array();
		images[1]="Gfx/lab/1.jpg";
		images[2]="Gfx/lab/2.jpg";
		images[3]="Gfx/lab/3.jpg";
		images[4]="Gfx/lab/4.jpg";
		images[5]="Gfx/lab/5.jpg";		
writeRandomImage(images, null);