// random image
function randomImage_left()
{
	var max = 11;
	number = Math.random() * max + 1;
	which = Math.round(number);
	image = '<img src="images/left_nav_image' + which + '.jpg" border="0" height="166">';
	return image;
}
function randomImage_right()
{
	var max = 16;
	number = Math.random() * max + 1;
	whichfly = Math.round(number);
	image = '<img src="images/right_nav_image' + whichfly + '.jpg" border="0">';
	return image;
}