You should check for mismatched {}'s I did some cut & paste action below, maybe it will help you see. I "think" you may have an extra } before your first else, and you may be missing one before your elsif. Just my best guess :-)

   if ($page == "0"){
   foreach $pic (@images){
    if ($ttlcounter <= "24"){
    if ($tmpcounter eq "3"){
     }else{
     }
   }
   }else{
}
}
elsif($page eq "1"){
   {
   }
   foreach $pic (@images){
    if ($ttlcounter =< "24"){
    if ($tmpcounter == "3"){
     }else{
     }
   }
   }else{
}
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LR