我想做成一个js文件，就是不行，请帮帮忙？

这个代码放在页面中使用是没有问题，但为了今后使用方便，想将这些代码放到一个js文件里调用，效果就没有了。呜！！！！


<script language="javascript" type="text/javascript">
var Speed = 10; //速度(毫秒)
var Space = 10; //每次移动(px)
var PageWidth = 220; //翻页宽度
var fill = 0; //整体移位
var MoveLock = false;
var MoveTimeObj;
var Comp = 0;
var AutoPlayObj = null;
GetObj("List2").innerHTML = GetObj("List1").innerHTML;
GetObj('ISL_Cont').scrollLeft = fill;
GetObj("ISL_Cont").onmouseover = function(){clearInterval(AutoPlayObj);}
GetObj("ISL_Cont").onmouseout = function(){AutoPlay();}
AutoPlay();
function GetObj(objName){if(document.getElementById){return eval('document.getElementById("'+objName+'")')}else{return eval

('document.all.'+objName)}}
function AutoPlay(){ //自动滚动
clearInterval(AutoPlayObj);
AutoPlayObj = setInterval('ISL_GoDown();ISL_StopDown();',5000); //间隔时间
}
function ISL_GoUp(){ //上翻开始
if(MoveLock) return;
clearInterval(AutoPlayObj);
MoveLock = true;
MoveTimeObj = setInterval('ISL_ScrUp();',Speed);
}
function ISL_StopUp(){ //上翻停止
clearInterval(MoveTimeObj);
if(GetObj('ISL_Cont').scrollLeft % PageWidth - fill != 0){
Comp = fill - (GetObj('ISL_Cont').scrollLeft % PageWidth);
CompScr();
}else{
MoveLock = false;
}
AutoPlay();
}
function ISL_ScrUp(){ //上翻动作
if(GetObj('ISL_Cont').scrollLeft <= 0){GetObj('ISL_Cont').scrollLeft = GetObj

('ISL_Cont').scrollLeft + GetObj('List1').offsetWidth}
GetObj('ISL_Cont').scrollLeft -= Space ;
}
function ISL_GoDown(){ //下翻
clearInterval(MoveTimeObj);
if(MoveLock) return;
clearInterval(AutoPlayObj);
MoveLock = true;
ISL_ScrDown();
MoveTimeObj = setInterval('ISL_ScrDown()',Speed);
}
function ISL_StopDown(){ //下翻停止
clearInterval(MoveTimeObj);
if(GetObj('ISL_Cont').scrollLeft % PageWidth - fill != 0 ){
Comp = PageWidth - GetObj('ISL_Cont').scrollLeft % PageWidth + fill;
CompScr();
}else{
MoveLock = false;
}
AutoPlay();
}
function ISL_ScrDown(){ //下翻动作
if(GetObj('ISL_Cont').scrollLeft >= GetObj('List1').scrollWidth){GetObj('ISL_Cont').scrollLeft =

GetObj('ISL_Cont').scrollLeft - GetObj('List1').scrollWidth;}
GetObj('ISL_Cont').scrollLeft += Space ;
}
function CompScr(){
var num;
if(Comp == 0){MoveLock = false;return;}
if(Comp < 0){ //上翻
if(Comp < -Space){
   Comp += Space;
   num = Space;
}else{
   num = -Comp;
   Comp = 0;
}
GetObj('ISL_Cont').scrollLeft -= num;
setTimeout('CompScr()',Speed);
}else{ //下翻
if(Comp > Space){
   Comp -= Space;
   num = Space;
}else{
   num = Comp;
   Comp = 0;
}
GetObj('ISL_Cont').scrollLeft += num;
setTimeout('CompScr()',Speed);
}
}
</script>