jquery implements the instance code that scrolls from bottom to top _jquery

Have the following code:

Copy Code code as follows:

<div id= "Odiv" >
<ul id= "Oul" >
<li> 1th li Element </li>
<li> 2nd li Element </li>
<li> 3rd li Element </li>
<li> 4th li Element </li>
<li> 5th li Element </li>
<li> 6th li Element </li>
<li> 7th Li Element </li>
<li> 8th li Element </li>
</ul>
</div>

But the page only shows the first 5 Li (related CSS do not repeat), want to loop show Li inside the content is in the enactment of the time will be the UL move up Li's height, at the same time will be the first Li added to the UL in the end of Li.
The code is as follows:

Copy Code code as follows:

function AutoScroll (obj, ul_bz) {
$ (obj). Find (UL_BZ). Animate ({
MarginTop: " -25px"
},500,function () {
$ (this). CSS ({margintop: "0px"}). Find ("Li:first"). Appendto (this);
});
}
SetInterval (' AutoScroll ("#oDiv", "#oUl") ', 3000