/*Carousel MS - corporate */

function initCarousel(width, visibleItems){
	list = $('ul#thumbs');
	if(list.size() > 0)
	{
  	item_width = width;
  	visible_items = visibleItems;
  	attachEvents();
  	checkArrowsStatus();
  	$('.thumbImage').each(function(){
  		var img = $(this).attr('href');
  		$(this).attr('href','#');
  		$(this).attr('target', '');
  		$(this).click(function(){
  			$('.img_dett img').attr('src', img);
  			$('a.selected').removeClass('selected');
  			$(this).addClass('selected');
  			return false;
  		})
  		
  		if($('a.selected').size() == 0)
  		  $('.thumbImage').eq(0).addClass('selected');
  	});
  }
}

function attachEvents(){
	$('.next_button').click(function(){
		if(canMove('right')){
			moveCarousel('right');	
		}								 
	});
	$('.previous_button').click(function(){
		if(canMove('left')){
			moveCarousel('left');	
		}							 
	});
}
function moveCarousel(direction){
	var value = item_width;
	if(direction=='right'){
		value *= -1
	}
	$('.next_button').unbind('click');
	$('.previous_button').unbind('click');
	list.animate({left: (getCurrentPosition() + value) + 'px'}, {duration:200, queue:true, complete: function(){
		attachEvents();
		checkArrowsStatus();
	}
	});
	
}

function checkArrowsStatus(){
	if(!canMove('left')){
			$('.previous_button').addClass('previous_button_disabled');	
			$('.previous_button').fadeTo(200, 0.3);
		}else{
			$('.previous_button').removeClass('previous_button_disabled');	
			$('.previous_button').fadeTo(200, 1);
		}
		if(!canMove('right')){
			$('.next_button').addClass('next_button_disabled');	
			$('.next_button').fadeTo(200, 0.3);
		}else{
			$('.next_button').removeClass('next_button_disabled');		
			$('.next_button').fadeTo(200, 1);
		}
}
function canMove(direction){
	
	var currentPosition = getCurrentPosition();
	
	//return ((direction=='left' &&  getCurrentPosition() > 0)||(direction=='left' && ( getCurrentPosition() < totalWidht ) ));
	return((direction=='right' && getCurrentPosition() +  (getListWidth() - (item_width* visible_items)) > 0)||(direction=='left' && getCurrentPosition() < 0))
}

function getCurrentPosition(){
	return list.position().left;
}

function getListWidth(){ 
  return list.children().length * item_width;
}