scrollto problemer

Findes der en nem måde til at få dette script til at scrolle i et div istedet for at scrolle hele skærmen?

window.onload = function() {
    HtinyScrolling.init(); scrollTips.init();
}

function gotoit(target){
    HtinyScrolling.scrollToIt(target);
}

var HtinyScrolling = {
    speed : 5,      //set here the scroll speed: when this value increase, the speed decrease.
    maxStep: 150,    //set here the "uniform motion" step for long distances
    brakeK: 3,        //set here the coefficient of slowing down
    hash:null,       
    currentBlock:null,
    requestedX:0,
    init: function() {
        var lnks = document.getElementsByTagName('a'); 
        for(var i = 0, lnk; lnk = lnks[i]; i++) { 
            if ((lnk.href && lnk.href.indexOf('#') != -1) &&  ( (lnk.pathname == location.pathname) ||
            ('/'+lnk.pathname == location.pathname) ) && (lnk.search == location.search)) { 
            addEvent(lnk,'click',HtinyScrolling.initScroll,false);
            lnk.onclick=function(){return false;} // Safari
            } 
        }   
    },
    getTarget: function(target) {
        while(target.tagName.toLowerCase() != 'a')
            target = target.parentNode;
        return target;
    },
    getElementXpos: function(el){
        var x = 0;
        while(el.offsetParent){ 
            x += el.offsetLeft;   
            el = el.offsetParent;
        }    return x;
    },       
    getScrollLeft: function(){
        if(document.all) return (document.documentElement.scrollLeft) ? document.documentElement.scrollLeft : document.body.scrollLeft;
        else return window.pageXOffset; 
    },   
    getWindowWidth: function(){
        if (window.innerWidth)    return window.innerWidth;
        if(document.documentElement && document.documentElement.clientWidth) return document.documentElement.clientWidth;
    },
    getDocumentWidth: function(){
        if (document.width) return document.width;
        if(document.body.offsetWidth) return document.body.offsetWidth;
    },
    initScroll: function(e){
        var targ; 
        if (!e) var e = window.event;
        if (e.target) targ = e.target;
        else if (e.srcElement) targ = e.srcElement; 
        targ = HtinyScrolling.getTarget(targ);  //a fix by Skid X
        HtinyScrolling.hash = targ.href.substr(targ.href.indexOf('#')+1,targ.href.length);
        HtinyScrolling.currentBlock = document.getElementById(HtinyScrolling.hash); 
        if(!HtinyScrolling.currentBlock) return;
        HtinyScrolling.requestedX = HtinyScrolling.getElementXpos(HtinyScrolling.currentBlock);
        HtinyScrolling.scroll(targ);
        return false;
    },
    scrollToIt: function(targ){ //thanks to Michael Ionita-Ganea
        target = document.getElementById(targ);
        HtinyScrolling.currentBlock = document.getElementById(targ);
        if(!HtinyScrolling.currentBlock) return;
        HtinyScrolling.requestedX = HtinyScrolling.getElementXpos(HtinyScrolling.currentBlock);
        HtinyScrolling.scroll(target);
        return false;
       
    },
    scroll: function(targ) {
        var left  = HtinyScrolling.getScrollLeft();
        if(HtinyScrolling.requestedX > left) { //a fix by Michael Ionita-Ganea
            var endDistance = Math.round((HtinyScrolling.getDocumentWidth() - (left + HtinyScrolling.getWindowWidth())) / HtinyScrolling.brakeK);
            endDistance = Math.min(Math.round((HtinyScrolling.requestedX-left)/ HtinyScrolling.brakeK), endDistance);
            var offset = Math.min(Math.abs(Math.round((HtinyScrolling.requestedX-left)/ HtinyScrolling.brakeK)), HtinyScrolling.maxStep);
        }else {
                var offset = - Math.min(Math.abs(Math.round((HtinyScrolling.requestedX-left)/ HtinyScrolling.brakeK)), HtinyScrolling.maxStep);
        }
        window.scrollTo(left + offset, 0);
        if(Math.abs(left-HtinyScrolling.requestedX) <= 1 || HtinyScrolling.getScrollLeft() == left) {
            HtinyScrolling.hash = null;
        } else     setTimeout(HtinyScrolling.scroll,HtinyScrolling.speed);
    }
}


var scrollTips = {
    dx : null,
    init : function() {   
        if (window.addEventListener) {
        window.addEventListener("DOMMouseScroll", this.mouseScroll, false);
        } else document.attachEvent("onmousewheel", this.mouseScroll);
        var left = document.getElementById('left');
        addEvent(left,'mouseover', function() {this.dx=setInterval('scrollTips.arrowScroll(0)',100);return false;});
        addEvent(left,'mouseout', function() { clearInterval(this.dx); return false;});
        var right = document.getElementById('right');
        addEvent(right,'mouseover', function() {this.dx=setInterval('scrollTips.arrowScroll(1)',100);return false;});
        addEvent(right,'mouseout', function() { clearInterval(this.dx); return false;});
    },
    mouseScroll : function(e) {
        if (!e) var e = window.event;
          var scroll = e.detail ? e.detail * 20 : e.wheelDelta / -20;
        if (scroll>=0 ){ 
        window.scrollBy(80,0);
        } else  window.scrollBy(-80,0) ;
    },   
    arrowScroll: function(val) {
        if(val==1) {
            window.scrollBy(70,0);
        } else {
            window.scrollBy(-70,0)
        }
    }
}


function addEvent( obj, type, fn ) {
    if (obj.addEventListener)
        obj.addEventListener( type, fn, false );
    else if (obj.attachEvent) {
        obj["e"+type+fn] = fn;
        obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
        obj.attachEvent( "on"+type, obj[type+fn] );
    }
}

function removeEvent( obj, type, fn ) {
    if (obj.removeEventListener)
        obj.removeEventListener( type, fn, false );
    else if (obj.detachEvent) {
        obj.detachEvent( "on"+type, obj[type+fn] );
        obj[type+fn] = null;
        obj["e"+type+fn] = null;
    }
}