#! /bin/sh
egrep -l 'function (top|back|next|last)' *.html |
( while read F
  do ( tr -s '\012\015' '\012\012' < $F ; echo '' ) > $F.old
     touch -r $F $F.old
     nawk '
{
  if(match($0,/^function (top|back|next|last)/)==1)
    printf("function toho%s\n",substr($0,10));
  else if(match($0,/onclick=.(top|back|next|last)/)>0)
    printf("%stoho%s\n",substr($0,1,RSTART+8),substr($0,RSTART+9));
  else
    printf("%s\n",$0);
}' $F.old > $F.new
  done
)