var rotate_artshow = 
{
	// global vars
	image_url: new Array(),
	arrayLength: null,
	
	changeImage: function(type)
	{
		// fade image out
		$('#artshow_currentImage').animate({opacity: 0.1}, 'fast', function()
		{
			var thisNum = parseInt($('#artshow_currentImage').attr('alt').replace(/Featured Project /g,''));
			var newImageId = 0;
			
			if(type == 'prev')
			{
				// determine next image
				newImageId = (thisNum > 0) ? (thisNum-1) : rotate_artshow.arrayLength;				
			}
			else
			{
				// determine next image
				newImageId = (thisNum < rotate_artshow.arrayLength) ? (thisNum+1) : 0;				
			}
			
			// force image to load
			var nextImage = new Image(); 
			nextImage.src = rotate_artshow.image_url[newImageId][0];

			if(nextImage.complete)
			{
				// fade new image in
				$('#artshow_currentImage').attr('src', rotate_artshow.image_url[newImageId][0]).attr('alt', ''+newImageId);
				$('#artshow_currentImage').animate({opacity: 1}, 'fast');
								
			}
			else
			{
				nextImage.onload = function()
				{
					$('#artshow_currentImage').attr('src',rotate_artshow.image_url[newImageId][0]).attr('alt', ''+newImageId);
					$('#artshow_currentImage').animate({opacity: 1}, 'fast');
				}								
			}						
		});		
	},

	init: function()
	{		                                                                                          
		rotate_artshow.image_url[0] = new Array('/img/culture_highlights/art_show/AS_1.jpg');
		rotate_artshow.image_url[1] = new Array('/img/culture_highlights/art_show/AS_2.jpg');
		rotate_artshow.image_url[2] = new Array('/img/culture_highlights/art_show/AS_3.jpg');
		rotate_artshow.image_url[3] = new Array('/img/culture_highlights/art_show/AS_4.jpg');
		rotate_artshow.image_url[4] = new Array('/img/culture_highlights/art_show/AS_5.jpg');
		rotate_artshow.image_url[5] = new Array('/img/culture_highlights/art_show/AS_6.jpg');
		rotate_artshow.image_url[6] = new Array('/img/culture_highlights/art_show/AS_7.jpg');
		rotate_artshow.image_url[7] = new Array('/img/culture_highlights/art_show/AS_8.jpg');
		rotate_artshow.image_url[8] = new Array('/img/culture_highlights/art_show/AS_9.jpg');
		rotate_artshow.image_url[9] = new Array('/img/culture_highlights/art_show/AS_10.jpg');
		rotate_artshow.image_url[10] = new Array('/img/culture_highlights/art_show/AS_11.jpg');
		rotate_artshow.image_url[11] = new Array('/img/culture_highlights/art_show/AS_12.jpg');
		rotate_artshow.image_url[12] = new Array('/img/culture_highlights/art_show/AS_13.jpg');
		rotate_artshow.image_url[13] = new Array('/img/culture_highlights/art_show/AS_14.jpg');
		rotate_artshow.image_url[14] = new Array('/img/culture_highlights/art_show/AS_15.jpg');
		rotate_artshow.image_url[15] = new Array('/img/culture_highlights/art_show/AS_16.jpg');
		rotate_artshow.image_url[16] = new Array('/img/culture_highlights/art_show/AS_17.jpg');
		rotate_artshow.image_url[17] = new Array('/img/culture_highlights/art_show/AS_18.jpg');
		
		rotate_artshow.arrayLength = rotate_artshow.image_url.length;
		rotate_artshow.arrayLength -= 1;
		$('#hlPreviousArtshow').bind('click', function() { rotate_artshow.changeImage('prev'); });
		$('#hlNextArtshow').bind('click', function() { rotate_artshow.changeImage('next'); });
	}
}