never mind...got it working....very dirty but it works.
maybe someone can convert the code to some proper code (gpc) etc.
I've put this in header include:
Code:
<vb:if condition="$_GET['t'] > '0'">
<vb:if condition=$_GET['page']>
<link rel="prefetch" href="http://www.crapforum.nl/showthread.php?t={vb:raw $_GET['t']}&page={vb:math {$pagenumber}+1}">
<link rel="prerender" href="http://www.crapforum.nl/showthread.php?t={vb:raw $_GET['t']}&page={vb:math {$pagenumber}+1}">
</vb:if>
<link rel="prefetch" href="http://www.crapforum.nl/showthread.php?t={vb:raw $_GET['t']}&page={vb:math {$pagenumber}+2}">
<link rel="prerender" href="http://www.crapforum.nl/showthread.php?t={vb:raw $_GET['t']}&page={vb:math {$pagenumber}+2}">
<vb:else />
<link rel="prefetch" href="http://www.crapforum.nl/search.php?do=getdaily&contenttype=vBForum_Post">
<link rel="prerender" href="http://www.crapforum.nl/search.php?do=getdaily&contenttype=vBForum_Post">
</vb:if>