$(document).ready(function() {
	$('img.productimage_colour').mouseover(changeProductImage);
	
	function changeProductImage() {
		var id = $(this).attr('id');
		id = id.replace('productimage_colour_', '');

		// select image for replacement
		$('.product-images:not(.preload)').addClass('preload');
		$('#productimage_' + id).removeClass('preload');

		var hiLink = $('#productimage_' + id).parent().attr('href');
		$('a#photo-download').attr('href', hiLink);

		var colour_description = $('span#product-colour-description').text(product_image_colours[id]['colour_description']);

		var descHtml = '';

		if (product_image_colours[id]['model_descriptions']) {
			for (var i = 0; i < product_image_colours[id]['model_descriptions'].length; i++) {
				descHtml += product_image_colours[id]['model_descriptions'][i] + '<br />';
			}

			if (descHtml.length > 0) {
				descHtml += '<br />' + product_image_colours[id]['model_number'] + ' ' + product_image_colours[id]['model_description'];
				descHtml += '<br />';
				$('#product-description').html(descHtml).append(colour_description);
			}
		}
	}
});