function navigatetowelsh() {
document.location.href=document.location.href.replace('english/','welsh/');
}

function navigatetoenglish() {
document.location.href=document.location.href.replace('welsh/','english/');
}

function header_image(image_type) {
	switch (image_type) {
		case 'courses':
			var num_images=13;
			var ranNum= Math.floor((Math.random()* num_images)+1);
		break
		
		case 'centre':
			var num_images=16;
			var ranNum= Math.floor((Math.random()* num_images)+1);
		break
		
		case 'workplace':
			var num_images=7;
			var ranNum= Math.floor((Math.random()* num_images)+1);
		break
		
		case 'family':
			var num_images=7;
			var ranNum= Math.floor((Math.random()* num_images)+1);
		break
	}
	document.write('<img src="../../header_images/'+ image_type + '_' + ranNum + '.jpg" border=0 width=499 height=200 alt="" style="float:left">');
}