//Chooses a random image from an array and set the logo background and title accordingly
//For each site using the random image create a new case

function changeBanner(images) {
	x=document.getElementById('topBanner');
	var randomNo = Math.floor(Math.random() * images.length);
	x.style.backgroundImage="url('" + images[randomNo][0] + "')";
	y=document.getElementById('logo');
	y.title=images[randomNo][1];
}

function changeSchoolImage(images) {
	x=document.getElementById('randomImage');
	var randomNo = Math.floor(Math.random() * images.length);
	x.style.backgroundImage="url('" + images[randomNo][0] + "')";
	x.title=images[randomNo][1];
}

function randomImage(site) {
var images = new Array();
	switch (site) {
	case 'publicsite':
		images[0] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/publicsite/image_banner_ballpool.jpg', 'Oxfordshire County Council - Child in ballpool');
		images[1] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/publicsite/image_banner_bluebells.jpg', 'Oxfordshire County Council - Bluebells in Cowleaze Woods by Mike Farthing');
		images[2] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/publicsite/image_banner_boatonthames.jpg', 'Oxfordshire County Council - Boat on the River Thames by Paul Harris');
		images[3] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/publicsite/image_banner_cricket.jpg', 'Oxfordshire County Council - Cricket in Charlbury by Nick Owen');
		images[4] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/publicsite/image_banner_crocuses.jpg', 'Oxfordshire County Council - Crocuses under the apple tree by Adrian Sell');
		images[5] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/publicsite/image_banner_didcotps.jpg', 'Oxfordshire County Council - Didcot Power Station by Terry Selleck');
		images[6] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/publicsite/image_banner_dorchesterabbey.jpg', 'Oxfordshire County Council - Dorchester Abbey by Terry Selleck');
		images[7] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/publicsite/image_banner_dusk.jpg', 'Oxfordshire County Council - Oxford at dusk by James Lawrence');
		images[8] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/publicsite/image_banner_fireengine.jpg', 'Oxfordshire County Council - Fire engine');
		images[9] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/publicsite/image_banner_hanneygreen.jpg', 'Oxfordshire County Council - The Buttercross on West Hanney Green by Keith Diment');
		images[10] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/publicsite/image_banner_kingfisher.jpg', 'Oxfordshire County Council - Kingfisher in a Hanney garden by Keith Diment');
		images[11] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/publicsite/image_banner_poppies.jpg', 'Oxfordshire County Council - Poppy field in Faringdon by Mike Farthing');
		images[12] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/publicsite/image_banner_rugby.jpg', 'Oxfordshire County Council - Child playing rugby');
		images[13] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/publicsite/image_banner_womanwithchild.jpg', 'Oxfordshire County Council - Woman with child');
		images[14] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/publicsite/image_banner_woodland.jpg', 'Oxfordshire County Council - Hanney Community Woodland by Keith Diment');
		images[15] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/publicsite/image_banner_sheep.jpg', 'Oxfordshire County Council - View from Wittenham Clumps by Mark Shepley');
		changeBanner(images)
		break;
	case 'insite':
		images[0] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/insite/rowing_banner.jpg', 'Oxfordshire County Council - ICT rowing crew');
		images[1] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/insite/climbing_banner.jpg', 'Oxfordshire County Council - Climbing');
		images[2] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/insite/countyhall_banner.jpg', 'Oxfordshire County Council - County Hall');
		images[3] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/insite/school_banner.jpg', 'Oxfordshire County Council - School');
		images[4] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/insite/cafe_banner.jpg', 'Oxfordshire County Council - Common Hall Cafe');
		images[5] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/insite/foxcombe_banner.jpg', 'Oxfordshire County Council - Foxcombe Court');
		images[6] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/insite/regoffice_banner.jpg', 'Oxfordshire County Council - Registration Office');
		images[7] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/insite/speedwell_banner.jpg', 'Oxfordshire County Council - Speedwell House');
		images[8] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/insite/child_banner.jpg', 'Oxfordshire County Council - Child at play');
		images[9] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/insite/adultlearning_banner.jpg', 'Oxfordshire County Council - Adult learning');
		images[10] = new Array('https://www.oxfordshire.gov.uk/content/publicnet/images/banners/insite/pandr_banner.jpg', 'Park and Ride sign');
		changeBanner(images)
		break;
	case '365alive':
		images[0] = new Array('https://portal.oxfordshire.gov.uk/content/publicnet/images/banners/365/image_banner_365_1.jpg', 'Oxfordshire County Council - 365 Alive');
		images[1] = new Array('https://portal.oxfordshire.gov.uk/content/publicnet/images/banners/365/image_banner_365_2.jpg', 'Oxfordshire County Council - 365 Alive');
		images[2] = new Array('https://portal.oxfordshire.gov.uk/content/publicnet/images/banners/365/image_banner_365_3.jpg', 'Oxfordshire County Council - 365 Alive');
		images[3] = new Array('https://portal.oxfordshire.gov.uk/content/publicnet/images/banners/365/image_banner_365_4.jpg', 'Oxfordshire County Council - 365 Alive');
		images[4] = new Array('https://portal.oxfordshire.gov.uk/content/publicnet/images/banners/365/image_banner_365_5.jpg', 'Oxfordshire County Council - 365 Alive');
		images[5] = new Array('https://portal.oxfordshire.gov.uk/content/publicnet/images/banners/365/image_banner_365_6.jpg', 'Oxfordshire County Council - 365 Alive');
		images[6] = new Array('https://portal.oxfordshire.gov.uk/content/publicnet/images/banners/365/image_banner_365_7.jpg', 'Oxfordshire County Council - 365 Alive');
		images[7] = new Array('https://portal.oxfordshire.gov.uk/content/publicnet/images/banners/365/image_banner_365_8.jpg', 'Oxfordshire County Council - 365 Alive');
		images[8] = new Array('https://portal.oxfordshire.gov.uk/content/publicnet/images/banners/365/image_banner_365_9.jpg', 'Oxfordshire County Council - 365 Alive');
		images[9] = new Array('https://portal.oxfordshire.gov.uk/content/publicnet/images/banners/365/image_banner_365_10.jpg', 'Oxfordshire County Council - 365 Alive');
		images[10] = new Array('https://portal.oxfordshire.gov.uk/content/publicnet/images/banners/365/image_banner_365_11.jpg', 'Oxfordshire County Council - 365 Alive');
		images[11] = new Array('https://portal.oxfordshire.gov.uk/content/publicnet/images/banners/365/image_banner_365_12.jpg', 'Oxfordshire County Council - 365 Alive');
		changeBanner(images)
		break;
	case 'schools':
		images[0] = new Array('https://portal.oxfordshire.gov.uk/content/public/CYPF/schools/schools_insite_banners/150_finance_calculator.jpg', 'calculator');
		images[1] = new Array('https://portal.oxfordshire.gov.uk/content/public/CYPF/schools/schools_insite_banners/150_schools_abacus.jpg', 'abacus');
		images[2] = new Array('https://portal.oxfordshire.gov.uk/content/public/CYPF/schools/schools_insite_banners/150_schools_box_of_crayons.jpg', 'box of crayons');
		images[3] = new Array('https://portal.oxfordshire.gov.uk/content/public/CYPF/schools/schools_insite_banners/150_schools_boy_drawing_colour.jpg', 'boy drawing');
		images[4] = new Array('https://portal.oxfordshire.gov.uk/content/public/CYPF/schools/schools_insite_banners/150_schools_colored_pencils.jpg', 'pencils');
		images[5] = new Array('https://portal.oxfordshire.gov.uk/content/public/CYPF/schools/schools_insite_banners/150_schools_drawing_1.jpg', 'drawing');
		images[6] = new Array('https://portal.oxfordshire.gov.uk/content/public/CYPF/schools/schools_insite_banners/150_schools_mathematics_mat.jpg', 'maths set');
		images[7] = new Array('https://portal.oxfordshire.gov.uk/content/public/CYPF/schools/schools_insite_banners/150_schools_pencils.jpg', 'pencils');
		changeSchoolImage(images)
		break;
	default:
		break;
	}
}