//number of photographs to select from...
var number_of_backgrounds = 16; 

var photograph_title = new Array(number_of_backgrounds);

photograph_title[0] = "St Andrews Castle ruins (photograph copyright by Gušmundur Andri Hjįlmarsson)";
photograph_title[1] = "The Sea at St Andrews (photograph copyright by Gušmundur Andri Hjįlmarsson)";
photograph_title[2] = "St Andrews Castle ruins  (photograph copyright by Gušmundur Andri Hjįlmarsson)";
photograph_title[3] = "St Andrews seen from the West Sands (photograph copyright by Gušmundur Andri Hjįlmarsson)";
photograph_title[4] = "St Andrews seen from the South (photograph copyright by Simon Prosser)";
photograph_title[5] = "St Andrews Long Pier (photograph copyright by Simon Prosser)";
photograph_title[6] = "St Andrews seen from the South (photograph copyright by Simon Prosser)";
photograph_title[7] = "The Sky over St Andrews (photograph copyright by Simon Prosser)";
photograph_title[8] = "The Sea at St Andrews (photograph copyright by Simon Prosser)";
photograph_title[9] = "St Andrews seen from the South (photograph copyright by Simon Prosser)";
photograph_title[10] = "The Sea at St Andrews  (photograph copyright by Simon Prosser)";
photograph_title[11] = "St Andrews seen from the South (photograph copyright by Simon Prosser)";
photograph_title[12] = "The Sea at St Andrews (photograph copyright by Simon Prosser)";
photograph_title[13] = "St Andrews seen from the South (photograph copyright by Simon Prosser)";
photograph_title[14] = "St Andrews seen from the South (photograph copyright by Simon Prosser)";
photograph_title[15] = "The Sea at St Andrews (photograph copyright by Simon Prosser)";


//random selection of heading photograph...
function randomHeading(){
		
	var photograph = document.getElementById('heading_photograph');
	
	var i = Math.round(Math.random()*(number_of_backgrounds-1));
	
	photograph.src = "graphic/headings/" + i + ".jpg";
	photograph.title = photograph_title[i];
}