Passing a Hash to a Subroutine

[Johnstone, Colin]

Gidday All,
 
Im trying to pass a hash to a subroutine now. When passing with other variables do I 
have to pass it as a reference like I do an array. If so how do you dereference it, if 
you have to at all.
 
Where am I going wrong?
 
sub generate_navIndex{
  my ( $paramPath, $paramPageName, $paramArrayIndexPages ) = @_;
  my %paramArrayPicDetails = @{$paramArrayIndexPages};
my $output = "";
 while( my ( $key, $value ) = each( %paramArrayIndexPages ) ){
   $output .= "$key<br>";
 }
 return $output;
}
 
my $htmloutput = generate_navIndex( $outputDir, $pageName, \@arrayIndexPages );
 
 
 
Any help appreciated.
 
Thank YouColin Johnstone 
Website Project Officer 
Corporate Website Unit 
Public Affairs Directorate 
ph 9561 8643