function swapimages(image)
{
	s_pos = image.src.indexOf("\/off\/");
	if (s_pos == -1)
	{
		s_pos = image.src.indexOf("\/on\/");
		s_len = 4;
		s_rep = "\/off\/";
	}
	else
	{
		s_len = 5;
		s_rep = "\/on\/";
	}
	image.src = image.src.substr(0,s_pos) + s_rep + image.src.substr(s_pos+s_len);
}