jQuery.noConflict(); 

jQuery(document).ready(function($){

    // Commentpreview Plugin is written by Frank Bueltge
    // http://bueltge.de/live-kommentarvorschau-mit-jquery-und-wordpress/541/
    $('#comment').one('focus',function() {
        $('.formcontainer').prepend('<div id="comment-live-preview"></div>');
    });

    var $comment = '';
    $('#comment').keyup(function() {
        $comment = $(this).val();
        $comment = $comment.replace(/\n/g, "<br />").replace(/\n\n+/g, '<br /><br />').replace(/(<\/?)script/g,"$1noscript");
        $('#comment-live-preview').html( $comment );
    });

});