if(param("submit"))
{
        $start=param("start");
        $finish=param("finish");
        

        if(!defined($child_pid=fork()))
        {
                die "cannot fork $!";
        }
        elsif($child_pid==0)
        {
                
                my $query= "/usr/apache/cgi-bin/order/ldasdump.pl -png -d dicty chr5.1:$s
tart,$finish --user xxxx --pass xxxxxxxxx > /usr/apache/htdocs/nob24.png";
                exec($query);
                
        }
        else
        {
                
                waitpid($child_pid,0);
                print img({src=>"../../nob24.png",align=>'LEFT'});