var stock_urls = new Array (
		'resources/jpgs/stocks/coffee.jpg'
	,	'resources/jpgs/stocks/browsing.jpg'
	,	'resources/jpgs/stocks/family.jpg'
	,	'resources/jpgs/stocks/wee.jpg'
	,	'resources/jpgs/stocks/house.jpg'
	,	'resources/jpgs/stocks/adults.jpg'
	,	'resources/jpgs/stocks/young.jpg'
	,	'resources/jpgs/stocks/kitchen.jpg'
);

var stock_alts = new Array (
		'woman sipping coffee by window'
	,	'man and woman browsing on laptop'
	,	'mother, father and daughter on sofa'
	,	'excited woman on chair'
	,	'couple in front of house'
	,	'woman sitting on man\'s lap'
	,	'young couple on a sofa'
	,	'woman drinking coffee in kitchen'
);

function swap_photo() {
	len = stock_urls.length;
	idx = Math.round(Math.random()* len);
	if (idx == len) {
		idx--;
	}
	var element = document.getElementById("stock_photo");
	stock_url = stock_urls[idx]
	if ( location.pathname.match('viewer.pl') ) {
		stock_url = '../' + stock_url;
	}
	element.src = stock_url;
	element.alt = stock_alts[idx];
}