active = '';

function set_active(number)
{
	
	if(number != active)
	{	
		if(active != '')
		{
			document.getElementById(active).src= 'img/' + active + '.jpg';
		}
		active = number;
	}	
}

function swap(number,sw)
{
	var number = number;
	var sw = sw;

	if(number != active)
	{
		if(sw == 0)
		{
			document.getElementById(number).src= 'img/' + number + 'a.jpg';
		}
		else
		{
			document.getElementById(number).src= 'img/' + number + '.jpg';
		}
	}
}