Change expand collapse image

[Derek]

How can I change the expand collapse image from the default plus/minus?

[Princy]

Hello,

Try the following CSS.
CSS:

<style type="text/css">
 .rtlExpand, .rtlCollapse
  {
    background: url('../Images/button_edit_grey.gif') !important;
  }
</style>

Thanks,
Princy.