I add     push @resp, param(); and

    } else{
    push @resp, Modules::Htmlpage::make_header("There are params but n
+ot get_in.");
    push @resp, Modules::Htmlpage::make_top_content("home");
    push @resp, param();
    }
[download]

In Mozilla output is ...

Inside hello page.

get_in.xget_in.yget_in

internet explorer is ...

Inside hello page.

get_in.xget_in.y

get_in out !!!!!!! Why? Thanks for your help :)