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<script>
function $(ID)
{
var obj=document.getElementById(ID);
return obj;
}
function moveup(id,flag)
{
if(flag==1){
if($(id).scrollTop<$(id+1).offsetHeight){
$(id).scrollTop--;
}
}
else{
if($(id).scrollTop<$(id+1).offsetHeight){
$(id).scrollTop++;
}
}
}
</script>
<DIV id=demo style="overflow:hidden;WIDTH: 750px; height:50px;;">
<div id="demo1" class="demo1">
1.<br />
2.<br />
3.<br />
4.<br />
5.<br />
6.<br />
7.<br />
8.<br />
</div>
</DIV>
<a href="javascript:" onmouseup="moveup('demo',0)" >向下</a><a href="javascript:" onmouseup="moveup('demo',1)">向上</a>
<script>
function $(ID)
{
var obj=document.getElementById(ID);
return obj;
}
function moveup(id,flag)
{
if(flag==1){
$(id).scrollTop-=$(id+1).offsetHeight;
}
else{
$(id).scrollTop++;
}
}
</script>
<DIV id=demo style="overflow:hidden;WIDTH: 750px; height:50px;;">
<div id="demo1" class="demo1">
1.<br />
2.<br />
3.<br />
4.<br />
5.<br />
6.<br />
7.<br />
8.<br />
</div>
</DIV>
<a href="javascript:" onmouseup="moveup('demo',0)" >向下</a><a href="javascript:" onmouseup="moveup('demo',1)">向上</a>