function scrollDown()
{	
	var limit = 8;

	var lowerLeftPageNum = parseInt(($('#press3').attr('src').replace(".jpg", "")).replace("/gui/press/", ""));
	var lowerRightPageNum = parseInt(($('#press4').attr('src').replace(".jpg", "")).replace("/gui/press/", ""));
			
	lowerLeftPageNum += 2;
	lowerRightPageNum = lowerLeftPageNum + 1;

	if(lowerLeftPageNum < limit)
	{		
		$('#press1').attr('src', $('#press3').attr('src'));
		$('#press2').attr('src', $('#press4').attr('src'));
		
		$('#press3').attr('src', '/gui/press/' + lowerLeftPageNum + '.jpg');
		$('#press4').attr('src', '/gui/press/' + lowerRightPageNum + '.jpg');						
	}		
}

function scrollUp()
{			
	var limit = 0;

	var upperLeftPageNum = parseInt(($('#press1').attr('src').replace(".jpg", "")).replace("/gui/press/", ""));
	var upperRightPageNum = parseInt(($('#press2').attr('src').replace(".jpg", "")).replace("/gui/press/", ""));
			
	upperLeftPageNum -= 2;
	upperRightPageNum = upperLeftPageNum + 1;

	if(upperLeftPageNum > limit)
	{		
		$('#press3').attr('src', $('#press1').attr('src'));
		$('#press4').attr('src', $('#press2').attr('src'));
		
		$('#press1').attr('src', '/gui/press/' + upperLeftPageNum + '.jpg');
		$('#press2').attr('src', '/gui/press/' + upperRightPageNum + '.jpg');						
	}				
}

function scrollCartUp()
{
	
	var isTop = 0;
	var isBottom = 0;
	
	var topId = $('.visible').attr('id').replace("sub", "");
	
	if(topId > 0)
	{		
		$('#sub' + topId).removeClass('visible');
		
		if($('.visible').length)
		{	
			isBottom = 1;		
			var bottomId = $('.visible').attr('id').replace("sub", "");
			$('#sub' + bottomId).removeClass('visible');
		}
		
		topId = parseInt(topId);
		topId -= 1;
		
		$('#sub' + topId).addClass('visible');
		$('#sub' + (topId - 1)).addClass('visible');		
	}
}

function scrollCartDown()
{
	var topId = $('.visible').attr('id').replace("sub", "");
	$('#sub' + topId).removeClass('visible');
	
	if($('#sub' + (parseInt(topId) + 2)).length)
	{		
		var bottomId = $('.visible').attr('id').replace("sub", "");
		
		if($('#sub' + (parseInt(bottomId) + 1)).length)
		{
			
			
			$('#sub' + bottomId).removeClass('visible');
			
			bottomId = parseInt(bottomId);
			
			bottomId += 1;
			
			$('#sub' + bottomId).addClass('visible');
			$('#sub' + (bottomId + 1)).addClass('visible');					
		}		
	}
	else
	{
		$('#sub' + topId).addClass('visible');
	}
}

$('.productThumbnail').click(function() {
	
	var src = $(this).attr('src');
	var bk = src;
	
	src = src.replace("/thumb_", "/");
	bk = bk.replace('/thumb_', '/large_');	
	
	$('#largeProductImage').attr('src', src);
	
	$('#largeProductImage').parent().attr('href', bk);
	
	reloadZoom();	
	
});