Vende scrollretning ved mouseover

Hej. Er der nogen, der kan vise mig, hvordan jeg indsætter to knapper, man kan rulle henover for at vælge retningen på denne ellers udemærkede vertikale scroller uden at reloade siden (fx med en asp variabel). Man skal manuelt skrive false eller true i scriptet.

<script language="javascript">
/*******************************************
Vertical Scroller (Marquee Replacement) v-1.3
Brian Gosselin - http://scriptasylum.com
*******************************************/

//ENTER CONTENT TO SCROLL BELOW.
var content='Her er min scrolltekst...';

var boxheight=150;        // BACKGROUND BOX HEIGHT IN PIXELS.
var boxwidth=300;        // BACKGROUND BOX WIDTH IN PIXELS.
var boxcolor="#FFF6e9";  // BACKGROUND BOX COLOR.
var speed=50;            // SPEED OF SCROLL IN MILLISECONDS (1 SECOND=1000 MILLISECONDS)..
var pixelstep=1;          // PIXELS "STEPS" PER REPITITION.
var godown=false;        // TOP TO BOTTOM=TRUE , BOTTOM TO TOP=FALSE
var pauseOnmouseover=true; //SET TO "true" TO ENABLE PAUSE WHEN MOUSEOVER, "false" TO DISABLE IT.

// DO NOT EDIT BEYOND THIS POINT

var outer,inner,elementheight,ref,refX,refY;
var w3c=(document.getElementById)?true:false;
var ns4=(document.layers)?true:false;
var ie4=(document.all && !w3c)?true:false;
var ie5=(document.all && w3c)?true:false;
var ns6=(w3c && navigator.appName.indexOf("Netscape")>=0)?true:false;
var txt='';
var goscroll=true;
if(ns4){
txt+='<table cellpadding=0 cellspacing=0 border=0 height='+boxheight+' width='+boxwidth+'><tr><td>';
txt+='<ilayer name="ref" bgcolor="'+boxcolor+'" width='+boxwidth+' height='+boxheight+'></ilayer>';
txt+='</td></tr></table>'
txt+='<layer name="outer" bgcolor="'+boxcolor+'" visibility="hidden" width='+boxwidth+' height='+boxheight+' '+((pauseOnmouseover)? 'onmouseover="goscroll=false" onmouseout="goscroll=true"':'')+'>';
txt+='<layer  name="inner"  width='+(boxwidth-4)+' height='+(boxheight-4)+' visibility="hidden" left="2" top="2" >'+content+'</layer>';
txt+='</layer>';
}else{
txt+='<div id="ref" style="position:relative; width:'+boxwidth+'; height:'+boxheight+'; background-color:'+boxcolor+';"></div>';
txt+='<div id="outer" style="position:absolute; width:'+boxwidth+'; height:'+boxheight+'; visibility:hidden; background-color:'+boxcolor+'; overflow:hidden"  '+((pauseOnmouseover)? 'onmouseover="goscroll=false" onmouseout="goscroll=true"':'')+'>';
txt+='<div id="inner"  style="position:absolute; visibility:hidden; left:2px; top:2px; width:'+(boxwidth-4)+'; overflow:hidden; cursor:default;" '+((pauseOnmouseover)? 'onmouseover="goscroll=false" onmouseout="goscroll=true"':'')+'>'+content+'</div>';
txt+='</div>';
}
document.write(txt);
txt='';

function getElHeight(el){
if(ns4)return (el.document.height)? el.document.height : el.clip.bottom-el.clip.top;
else if(ie4||ie5)return (el.style.height)? el.style.height : el.clientHeight;
else return (el.style.height)? parseInt(el.style.height):parseInt(el.offsetHeight);
}

function getPageLeft(el){
var x;
if(ns4)return el.pageX;
if(ie4||w3c){
x = 0;
while(el.offsetParent!=null){
x+=el.offsetLeft;
el=el.offsetParent;
}
x+=el.offsetLeft;
return x;
}}

function getPageTop(el){
var y;
if(ns4)return el.pageY;
if(ie4||w3c){
y=0;
while(el.offsetParent!=null){
y+=el.offsetTop;
el=el.offsetParent;
}
y+=el.offsetTop;
return y;
}}

function scrollbox(){
if(goscroll){
if(ns4){
inner.top+=(godown)? pixelstep: -pixelstep;
if(godown){
if(inner.top>boxheight)inner.top=-elementheight;
}else{
if(inner.top<2-elementheight)inner.top=boxheight+2;
}}else{
inner.style.top=parseInt(inner.style.top)+((godown)? pixelstep: -pixelstep)+'px';
if(godown){
if(parseInt(inner.style.top)>boxheight)inner.style.top=-elementheight+'px';
}else{
if(parseInt(inner.style.top)<2-elementheight)inner.style.top=boxheight+2+'px';
}}}}

window.onresize=function(){
if(ns4)setTimeout('history.go(0)', 400);
else{
outer.style.left=getPageLeft(ref)+'px';
outer.style.top=getPageTop(ref)+'px';
}}

window.onload=function(){
outer=(ns4)?document.layers['outer']:(ie4)?document.all['outer']:document.getElementById('outer');
inner=(ns4)?outer.document.layers['inner']:(ie4)?document.all['inner']:document.getElementById('inner');
ref=(ns4)?document.layers['ref']:(ie4)?document.all['ref']:document.getElementById('ref');
elementheight=getElHeight(inner);
if(ns4){
outer.moveTo(getPageLeft(ref),getPageTop(ref));
outer.clip.width=boxwidth;
outer.clip.height=boxheight;
inner.top=(godown)? -elementheight : boxheight-2;
inner.clip.width=boxwidth-4;
inner.clip.height=elementheight;
outer.visibility="show";
inner.visibility="show";
}else{
outer.style.left=getPageLeft(ref)+'px';
outer.style.top=getPageTop(ref)+'px';
inner.style.top=((godown)? -elementheight : boxheight)+'px';
inner.style.clip='rect(0px, '+(boxwidth-4)+'px, '+(elementheight)+'px, 0px)';
outer.style.visibility="visible";
inner.style.visibility="visible";
}
setInterval('scrollbox()',speed);
}
</script>