var noOfHomeImages = 18;

/***************
CHANGE THE NUMBER ABOVE IF YOU ADD OR REMOVE IMAGES

images should be named as follows and uploaded to the "images/home" folder:

main0.jpg
main1.jpg
main2.jpg
...
main18.jpg

Ensure that there is a main0.jpg and that there are no missing numbers.
*/

//Javascript function - please do not change.
function getRandomNo()
{
 	rannum = Math.random()*noOfHomeImages; 
 	rannum = Math.round(rannum);
 	return rannum;
}