¿Como se hace scrolling a cierta área de una página?

[JoeMx]

Puedes Usar Etiquetas Iframes

<IFRAME id=labels name=labels marginWidth=0
marginHeight=0
src="tuarchivo.htm"
frameBorder=0 width="100%" scrolling=Default
height=100%></IFRAME>

Incluso tambien hay quienes los realizan en javascripts, es el caso de la pagina que ves de ejemplo.

<SCRIPT language=JavaScript>
<!--
// inicio scrollin areas script

function verifyCompatibleBrowser(){
this.ver=navigator.appVersion
this.dom=document.getElementById?1:0
this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0;
this.ie4=(document.all && !this.dom)?1:0;
this.ns5=(this.dom && parseInt(this.ver) >= 5) ?1:0;
this.ns4=(document.layers && !this.dom)?1:0;
this.bw=(this.ie5 || this.ie4 || this.ns4 || this.ns5)
return this
}

bw=new verifyCompatibleBrowser()

var speed=180

var loop, timer

function ConstructObject(obj,nest){
nest=(!nest) ? '':'document.'+nest+'.'
this.el=bw.dom?document.getElementById(obj):bw.ie4 ?document.all[obj]:bw.ns4?eval(nest+'document.'+obj):0;
this.css=bw.dom?document.getElementById(obj).style :bw.ie4?document.all[obj].style:bw.ns4?eval(nest+'document.'+obj):0;

this.scrollHeight=bw.ns4?this.css.document.height: this.el.offsetHeight
this.clipHeight=bw.ns4?this.css.clip.height:this.e l.offsetHeight
this.up=MoveAreaUp;this.down=MoveAreaDown;
this.MoveArea=MoveArea; this.x; this.y;
this.obj = obj + "Object"
eval(this.obj + "=this")
return this
}

function MoveArea(x,y){
this.x=x;this.y=y
this.css.left=this.x
this.css.top=this.y
}

function MoveAreaDown(move){
if(this.y>-this.scrollHeight+objContenedor.clipHeight){
this.MoveArea(0,this.y-move)
if(loop) setTimeout(this.obj+".down("+move+")",speed)
}
}

function MoveAreaUp(move){
if(this.y<0){
this.MoveArea(0,this.y-move)
if(loop) setTimeout(this.obj+".up("+move+")",speed)
}
}

function PerformScroll(speed){
if(initialised){
loop=true;
if(speed>0) objScroller.down(speed)
else objScroller.up(speed)
}
}

function CeaseScroll(){
loop=false
if(timer) clearTimeout(timer)
}

var initialised;

function InitialiseScrollableArea(){
objContenedor=new ConstructObject('contenedor')
objScroller=new ConstructObject('contenido','contenedor')
objScroller.MoveArea(0,0)
objContenedor.css.visibility='visible'
initialised=true;
}
// fin scrolling areas

//-->
</SCRIPT>

Creo que esto a lo que te refieres?