/*********************************************************

   FILE:  JavaScript/humor/sleep.js	
   Auth:  Thuy Le				

   DATE:  November 19, 2002
   LMD :  March 6, 2009

How do you sleep? 
- Requires images from /images/fun/sleep/*.gif

*********************************************************/

currZ = 1			// First index file.
maxZ = 10			// Last index file.

/*
 *   Previous image.
 */
function prev_img() 
{
	currZ == 1 ? currZ=maxZ : currZ--
	zImage()
}

/*
 *   Next image.
 */
function next_img() 
{
	currZ == maxZ ? currZ=1 : currZ++
	zImage()
}

/*
 *   Define & change to next image.
 */
function zImage() 
{
	image			= new Image() 	
	image.src		= create_img( currZ ) 	
	document.images[3].src 	= image.src	
}

/*
 *   Return new image/location file.
 */
function create_img( num ) 
{
	image_name = "../../images/fun/sleep/zzz0"

	if ( num < 10 ) 
		image_name += "0"
	
	image_name += num + ".gif"

	return image_name
}