How to implement jquery text scrolling up and down_jquery

Copy code The code is as follows:

//Scroll up and down

var textRoll=function(){

$('#notice p:last').css({'height':'0px','opacity': '0'}).insertBefore('#notice p:first').animate({' height':'35px','opacity': '1'}, 'slow', function() { $(this).removeAttr('style');});

$(function(){

//Trigger context word scroll event

var roll=setInterval('textRoll()',4000);

$("#notice p").hover(function() {

clearInterval(roll);

                                                                                                                                                           

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        });