Hi monks, I am getting the Warning message while executing the embedded xterm script, iam not getting exactly where iam going wrong can any one help me

Warning: Tried to connect to session manager, None of the authentication protocols specified aresupported Warning: Cannot convert string "nil2" to type FontStruct xterm: cannot load font -misc-fixed-medium-r-semicondensed--13-120-75-75-c-60-iso10646-1

#!/usr/bin/perl -w
use strict;
use Tk;
my $mw = MainWindow->new();
my $canv = $mw->Canvas(-bg => 'lightsteelblue',
     -relief => 'sunken',
     -width => 550,
     -height => 350)->pack(-expand => 1, -fill => 'both');

my $xtermWidth = 400;
my $xtermHeight = 150;

my $xtermContainer = $canv->Frame(-container => 1);
my $xtid = $xtermContainer->id();
my ($xtId) = sprintf hex $xtid;

my $dcontitem = $canv->createWindow(275,175,
   -window => $xtermContainer,
   -width => $xtermWidth+100,
   -height => $xtermHeight,
   -state => 'normal');
my $label = $canv->createText( 275,10,
       -text => "Hide xterm",
       );

$canv->Tk::bind("<Button-1>", \&hideShow);

my $width = $xtermWidth;
my $height = $xtermHeight;

$mw->Button(-text => "Exit", -command => [sub{Tk::exit}] )->pack(  );

my $tl; #used to mask xterm
system("xterm -into $xtId &");

MainLoop();
sub hideShow {
    if ($canv->itemcget($label, -text) =~ /Hide/) {
             $canv->itemconfigure($label,
                    -fill => 'white',
                    -text => "Show xterm");

             $tl = $mw->Toplevel(-use=>$xtId );
           } else {
             $canv->itemconfigure($label,
                    -fill => 'black',
                    -text => "Hide xterm");
             $tl->withdraw;
        }
}
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