Foren / Cotonti / Skins / Custom Function with skin

Is it possible to add a custom function or $t parse to a skin

In this case, I want the Edit and Put in Validation (among others) you have in page.tpl to be changed into pictures instead of text.
Is this possible to change the parse, or should I use Xtemplate's IF-THEN-ELSE instead?
to avoid the standard parse completely?

Regards

Added 38 minutes later:

<!-- IF {PAGE_ADMIN_EDIT} != "" -->
<a href="page.php?m=edit&id={PAGE_ID}&r=list"><img src="skins/{PHP.skin}/img/system/icon-edit.png" title="{PHP.L.Edit}" /></a>
<!-- ENDIF -->

Added 1 hour 16 minutes later:

And thanks too Kilandor's help

    <!-- BEGIN: PAGE_ADMIN -->
    <!-- IF {PHP.pag.page_state} == 1 -->
		<a href="admin.php?m=page&s=queue&a=validate&id={PHP.pag.page_id}&amp;x={PHP.sys.xk}"><img src="skins/{PHP.skin}/img/system/icon_validate.gif" title="{PHP.L.Validate}" /></a>
	<!-- ELSE -->
		<a href="admin.php?m=page&s=queue&a=unvalidate&id={PHP.pag.page_id}&amp;x={PHP.sys.xk}"><img src="skins/{PHP.skin}/img/system/icon_unvalidate.gif" title="{PHP.L.Putinvalidationqueue}" /></a>
	<!-- ENDIF -->
    ({PAGE_ADMIN_COUNT})
    <!-- END: PAGE_ADMIN -->