function showImage (id) {
	if (document.getElementById) {
		document.getElementById('img_container').innerHTML = '<a href="assets/images/l/' + id + '.jpg" target="_blank"><img src="assets/images/m/' + id + '.jpg" id="main_img" align="absmiddle" border="0" /></a>';
	} else {
		if (document.layers) {
			document.img_container.innerHTML = '<a href="assets/images/l/' + id + '.jpg" target="_blank"><img src="assets/images/m/' + id + '.jpg" id="main_img" align="absmiddle" border="0" /></a>';
		} else {
			document.all.img_container.innerHTML = '<a href="assets/images/l/' + id + '.jpg" target="_blank"><img src="assets/images/m/' + id + '.jpg" id="main_img" align="absmiddle" border="0" /></a>';
		}
	}
}


function opacity(id, opacStart, opacEnd, millisec) {
	//speed for each frame
	var speed = Math.round(millisec / 100);
	var timer = 0;

	//determine the direction for the blending, if start and end are the same nothing happens
	if(opacStart > opacEnd) {
		for(i = opacStart; i >= opacEnd; i--) {
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	} else if(opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++)
			{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	}
}

//change the opacity for different browsers
function changeOpac(opacity, id) {
	var object = document.getElementById(id).style;
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100);
	object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";
} 

function blendimage(divid, imageid, imagefile, millisec) {
	var speed = Math.round(millisec / 100);
	var timer = 0;
	
	//set the current image as background
	//document.getElementById(divid).style.background = "url(" + document.getElementById(imageid ).src + ")";
	//fade in image
	for(i = 100; i <= 0; i++) {
		setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
		timer++;
	}

	
	//make image transparent
	changeOpac(0, imageid);
	
	//make new image
	document.getElementById(imageid).src = "assets/images/m/" + imagefile + ".jpg";


	ImgSrc = new Image();
	ImgSrc.onload = function() {
		ImgSrc.onload = null;

		//fade in image
		for(i = 0; i <= 100; i++) {
			setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
			timer++;
		}

		//set anchor to large image
		//document.getElementById("img_anchor").href = "assets/images/l/" + imagefile + ".jpg";
		showImage(imagefile);
	}
	ImgSrc.src = "assets/images/m/" + imagefile + ".jpg";

} 

$.fn.infiniteCarousel = function () {

	function repeat(str, num) {
		return new Array( num + 1 ).join( str );
	}
	
	return this.each(function () {
		var $wrapper = $('> div', this).css('overflow', 'hidden'),
			$slider = $wrapper.find('> ul'),
			$items = $slider.find('> li'),
			$single = $items.filter(':first'),
			
			singleWidth = $single.outerWidth(), 
			visible = Math.ceil($wrapper.innerWidth() / singleWidth), // note: doesn't include padding or border
			currentPage = 1,
			pages = Math.ceil($items.length / visible);			


		// 1. Pad so that 'visible' number will always be seen, otherwise create empty items
		if (($items.length % visible) != 0) {
			$slider.append(repeat('<li class="empty" />', visible - ($items.length % visible)));
			$items = $slider.find('> li');
		}

		// 2. Top and tail the list with 'visible' number of items, top has the last section, and tail has the first
		$items.filter(':first').before($items.slice(- visible).clone().addClass('cloned'));
		$items.filter(':last').after($items.slice(0, visible).clone().addClass('cloned'));
		$items = $slider.find('> li'); // reselect
		
		// 3. Set the left position to the first 'real' item
		$wrapper.scrollLeft(singleWidth * visible);
		
		// 4. paging function
		function gotoPage(page) {
			var dir = page < currentPage ? -1 : 1,
				n = Math.abs(currentPage - page),
				left = singleWidth * dir * visible * n;
			
			$wrapper.filter(':not(:animated)').animate({
				scrollLeft : '+=' + left
			}, 500, function () {
				if (page == 0) {
					$wrapper.scrollLeft(singleWidth * visible * pages);
					page = pages;
				} else if (page > pages) {
					$wrapper.scrollLeft(singleWidth * visible);
					// reset back to start position
					page = 1;
				} 

				currentPage = page;
			});				
			
			return false;
		}
		
		$wrapper.after('<a class="arrow back"><span>&lt;</span></a><a class="arrow forward"><span>&gt;</span></a>');
		
		// 5. Bind to the forward and back buttons
		$('a.back', this).click(function () {
			return gotoPage(currentPage - 1);				
		});
		
		$('a.forward', this).click(function () {
			return gotoPage(currentPage + 1);
		});
		
		// create a public interface to move to a specific page
		$(this).bind('goto', function (event, page) {
			gotoPage(page);
		});
	});	
};

$(document).ready(function () {
	$('.infiniteCarousel').infiniteCarousel();
});