jQuery product intermittent scroll down effect core code_jquery

The core code is as follows:

Copy code The code is as follows:

$(function(){
var _BuyList=$("#buyList");
var Trundle = function () {
_BuyList.prepend(_BuyList.find("li:last")).css('marginTop', '-85px ');
_BuyList.animate({ 'marginTop': '0px' }, 800);
}
var setTrundle = setInterval(Trundle, 3000);
_BuyList.hover(function () {
clearInterval(setTrundle);
setTrundle = null;
},function () {
setTrundle = setInterval(Trundle, 3000);
});
});