function image_over(image_name)
 {
	image_name.src = "/framework_images/scrollUp_o.bmp"
 }
function image_out(image_name)
 {
	  image_name.src = "/framework_images/scrollUp.bmp"
 }

function image_over_dn(image_name)
{
      image_name.src = "/framework_images/scrollDn_o.bmp"
}
function image_out_dn(image_name)
{
      image_name.src = "/framework_images/scrollDn.bmp"
 }