var topani_num = 0;
if (document.images)
	{
	topani_img1 = new Image
	topani_img2 = new Image

	topani_img1.src = "main_image/topani_01s.jpg"
	topani_img2.src = "main_image/topani_01.gif"
	}
function topani_change()
	{
	if (topani_num == 0) {
		document.topani.src = topani_img2.src;
		topani_num = 1
	}
	else
	{
	document.topani.src = topani_img1.src;
	topani_num = 0	
	}
}