Js upstream and downstream code scrolling

<Base href = "http://image2.sina.com.cn/gm/lineage2/whz/newwh/images/fy/images/images/ifimage/">
Up
<Div id = demo style = "overflow: hidden; width: 128px; height: 300px;">
<Div id = demo1>
<br> <br> <br>

</Div>
<Div id = demo2> </div>
</Div>
<Script language = "javascript">
Var speed = 30
Demo2.innerHTML = demo1.innerHTML
Function Marquee (){
If (demo2.offsetTop-demo. scrollTop <= 0)
Demo. scrollTop-= demo1.offsetHeight
Else {
Demo. scrollTop ++
}
}
Var MyMar = setInterval (Marquee, speed)
Demo. onmouseover = function () {clearInterval (MyMar )}
Demo. onmouseout = function () {mymar = setinterval (marquee, speed )}
</SCRIPT>

Down

<Div id = demo3 style = "overflow: hidden; width: 128px; Height: 300px;">
<Div id = demo4>
<br> <br> <br>
</Div>
<Div id = demo5> </div>
</Div>
<Script language = "JavaScript">
VaR speed = 30
Demo5.innerhtml = demo4.innerhtml
Demo3.scrolltop = demo3.scrollheight
Function marquee (){
If (demo3.scrolltop <= 0)
Demo3.scrolltop + = demo5.offsetheight
Else {
Demo3.scrolltop --
}
}
VaR mymar = setinterval (marquee, speed)
Demo3.onmouseover = function () {clearInterval (MyMar )}
Demo3.onmouseout = function () {MyMar = setInterval (Marquee, speed )}
</Script>

Left

<Div id = demo6 style = "overflow: hidden; height: 100px; width: 300px;"> <table align = left

Cellpadding = 0 cellspace = 0 border = 0> <tr> <td id = demo7 valign = top>

Src = "bxtt.gif"> </td> <td id = demo8 valign = top> </td> </tr> </table> </div>
<Script>
Var speed = 30
Demo8.innerHTML = demo7.innerHTML
Function Marquee (){
If (demo8.offsetWidth-demo6.scrollLeft <= 0)
Demo6.scrollLeft-= demo7.offsetWidth
Else {
Demo6.scrollLeft ++
}
}
Var MyMar = setInterval (Marquee, speed)
Demo6.onmouseover = function () {clearinterval (mymar )}
Demo6.onmouseout = function () {mymar = setinterval (marquee, speed )}
</SCRIPT>

Right

<Div id = demo9 style = "overflow: hidden; Height: 100px; width: 300px;"> <Table align = left

Cellpadding = 0 cellspace = 0 border = 0> <tr> <TD id = demo10 valign = top>

Src = "bxtt.gif"> </TD> <TD id = demo11 valign = top> </TD> </tr> </table> </div>
<SCRIPT>
VaR speed = 30
Demo11.innerhtml = demo10.innerhtml
Demo9.scrollleft = demo9.scrollwidth
Function marquee (){
If (demo9.scrollleft <= 0)
Demo9.scrollleft + = demo11.offsetwidth
Else {
Demo9.scrollleft --
}
}
Var MyMar = setInterval (Marquee, speed)
Demo9.onmouseover = function () {clearInterval (MyMar )}
Demo9.onmouseout = function () {MyMar = setInterval (Marquee, speed )}
</Script>

When you scroll between the left and right sides, you cannot define the code in the scroll area as div but use table, because it is difficult to define the left and right sides of the div. This is my summary. I wonder if this is the case. There is always a problem when I use div scrolling.