selectImage = function(img)
{
	if (!img)
		return;
	var src = img.src;
	if (src.indexOf('_selected') < 0)
	{
		img.src = src.replace(".png", "_selected.png");
	}
}

unselectImage = function(img)
{
	if (!img)
		return;
	var src = img.src;
	if (src.indexOf('_selected') > 0)
	{
		img.src = src.replace("_selected.png", ".png");
	}
}