[jQuery] error - name.match is not a function

[jQuery] error - name.match is not a function


On line 782 of jquery-1.3.1.js this line of code makes this error:
name.match is not a function.
On line 782 there is:
if ( name.match( /float/i ) )
I'm trying to write a "news scroller" This is my code:
$(document).ready(function() {
            function scroller() {
                $("div#newsticker ul li").animate(
                    $(this).css("left", "-200px"),
                    "normal",
                    "linear",
                    function(){
                        $(this).css("left", "200px");
                        scroller();
                    }
                );
            }
            scroller();
        });
Any help would be greatly appreciated.