Elegant switch between TinyMCE and HTML modes

In HTML view the inserted codes had <br> at the end.

I edited some code to take care of it. Took me couple of hours to figure this our. ??

jQuery(".insert-code").click(function() {
    var example = jQuery( this ).parent().prev().find("code").text();

    var is_tinymce_active = (typeof tinyMCE != "undefined") && tinyMCE.activeEditor && !tinyMCE.activeEditor.isHidden();

    if (is_tinymce_active) {
        var lines = example.split('\n');
        var paras = '';
        jQuery.each(lines, function(i, line) {
            if (line) {
                paras += line + '<br>';
            }
        });
    } else {
        var paras = example;
    }

    var win = window.dialogArguments || opener || parent || top;
    win.send_to_editor(paras);
});