jQuery.fn.thicker = function(options) {
	var settings = {
		childrens: '.ThickerItem',
		speed: 1000,
		delay: 2000,
		idThickerStart: null,
		idThickerStop: null,
		idThickerPrevious: null,
		idThickerNext: null,
		idThickerGoTo: null,
		idThickerGoToActiveClass: 'On',
		effect: 'slide'
	};
	
	if(options)
		jQuery.extend(settings, options);
	
	var itemsList = jQuery(this).children(settings.childrens);
	var index = -1;
	var indexToMoveOut = -1;
	var timer = null;
	var thickerContainer = jQuery(this);
	var itemWidth = null;
	var itemHeight = null;
	var moveObjectOut = false;
	
	var init = function(){
		itemWidth = thickerContainer.width();
		itemHeight = thickerContainer.height();
		
		if(settings.idThickerStart)
			jQuery(settings.idThickerStart).click(function(){
				showNextItem();
				timer = setInterval(showNextItem, settings.delay);
				return false;
			});
		
		if(settings.idThickerStop)
			jQuery(settings.idThickerStop).click(function(){
				stopAnimation();
				return false;
			});
		
		if(settings.idThickerPrevious)
			jQuery(settings.idThickerPrevious).click(function(){
				stopAnimation();
				showPreviousItem();
				timer = setInterval(showNextItem, settings.delay);
				return false;
			});
		
		if(settings.idThickerNext)
			jQuery(settings.idThickerNext).click(function(){
				stopAnimation();
				showNextItem();
				timer = setInterval(showNextItem, settings.delay);
				return false;
			});

		if(settings.idThickerGoTo)
			jQuery(settings.idThickerGoTo).click(function(){
				if(jQuery(this).attr("rel"))
					stopAnimation();
					showItem(jQuery(this).attr("rel") - 1);
					timer = setInterval(showNextItem, settings.delay);
				return false;
			});

		function stopAnimation(){
			if(timer != null)
				clearInterval(timer);
		}
		
		function setItemsListIndexes(backward){
			if(backward == true){
				if(index > 0)
					index--;
				else
					index = itemsList.length - 1;
				
				indexToMoveOut = index + 1;
				if(index == itemsList.length - 1)
					indexToMoveOut = 0;
			} else {
				if(index < itemsList.length-1)
					index++;
				else
					index = 0;
				
				indexToMoveOut = index - 1;
				if(index == 0)
					indexToMoveOut = itemsList.length - 1;
			}
		}
	
		function setItemsListZIndex(){
			for(i=0; i < itemsList.length; i++){
				jQuery(itemsList[i]).css('z-Index', 1);
			}
			jQuery(itemsList[indexToMoveOut]).css('z-Index', 2);
			jQuery(itemsList[index]).css('z-Index', 3);
		}
	
		function showNextItem(){
			setItemsListIndexes();
			setItemsListZIndex();
			switch(settings.effect){
				case 'slide':
					moveItem('-' + itemWidth, 0, itemWidth, jQuery(itemsList[index]), jQuery(itemsList[indexToMoveOut]));
					break;
				case 'fade':
					jQuery(itemsList[index]).fadeIn(settings.speed);
					setTimeout(function(){jQuery(itemsList[indexToMoveOut]).hide();}, settings.speed);
					break;
				default:
					alert('Invalid effect');
			}
			setSelectedLink(index);
			moveObjectOut = true;
		}
	
		function showPreviousItem(){
			setItemsListIndexes(true);
			setItemsListZIndex();
			switch(settings.effect){
				case 'slide':
					moveItem(itemWidth, 0, '-' + itemWidth, jQuery(itemsList[index]), jQuery(itemsList[indexToMoveOut]));
					break;
				case 'fade':
					jQuery(itemsList[index]).fadeIn(settings.speed);
					setTimeout(function(){jQuery(itemsList[indexToMoveOut]).hide();}, settings.speed);
					break;
				default:
					alert('Invalid effect');
			}
			setSelectedLink(index);
		}

		function showItem(selectedIndex){
			if(index != -1 && index != selectedIndex){
				indexToMoveOut = index;
				index = selectedIndex;
				setItemsListZIndex();
				switch(settings.effect){
					case 'slide':
						moveItem(itemWidth, 0, '-' + itemWidth, jQuery(itemsList[index]), jQuery(itemsList[indexToMoveOut]));
						break;
					case 'fade':
						jQuery(itemsList[index]).fadeIn(settings.speed);
						setTimeout(function(){jQuery(itemsList[indexToMoveOut]).hide();}, settings.speed);
						break;
					default:
						alert('Invalid effect');
				}
				setSelectedLink(index);
			}
		}

		function setSelectedLink(selectedIndex){
			if(settings.idThickerGoTo){
				jQuery(settings.idThickerGoTo).removeClass(settings.idThickerGoToActiveClass);
				jQuery(settings.idThickerGoTo).eq(selectedIndex).addClass(settings.idThickerGoToActiveClass);
			}
		}

		function moveItem(itemToShowStart, itemToShowEnd, itemToHideEnd, itemToShow, itemToHide){
			itemToShow.css({left: itemToShowStart + 'px'});
			itemToShow.show();
			itemToShow.animate({left: itemToShowEnd + 'px'}, settings.speed);
			if(moveObjectOut && itemToHide)
				itemToHide.animate({left: itemToHideEnd + 'px'}, settings.speed);
		}
	
		showNextItem();
		if(itemsList.length > 1){
			timer = setInterval(showNextItem, settings.delay);
		}
	};
	
	init();
};