function addScrollers() {
// code each scroller as follows:
// startScroll('id of scroller div','content of scroller');
//startScroll('divAconteceCont','<p><a href="http:\/\/javascript.about.com\/">Focus on JavaScript<\/a> has JavaScript tutorials, help pages, and lots of <b>free scripts<\/b>.<\/p><p><a href="http:\/\/www.felgall.com\/">Ask Felgall<\/a> for help with anything to do with computers.</p><p><a href="http:\/\/about.com\/">About.com<\/a> - the ultimate guide directed information resource on the web.<\/p>');
//startScroll('twoscroll','<p>Yet another scroller!</p>');
}

var speed=15; // scroll speed (bigger = faster)
var stop=false; // quando verdadeiro para o scroll
var dR=false; // reverse direction

// Vertical Scroller Javascript
// copyright 24th September 2005, by Stephen Chapman
// permission to use this Javascript on your web page is granted
// provided that all of the code below (as well as these
// comments) is used without any alteration
var step = 2; 

function objWidth(obj) 
{
    if(obj.offsetWidth) 
        return obj.offsetWidth; 
    if (obj.clip) 
        return obj.clip.width; 
    return 0;
} 

function objHeight(obj) 
{
    if(obj.offsetHeight) 
        return obj.offsetHeight; 
    if (obj.clip) 
        return obj.clip.height; 
    return 0;
} 

function scrF(i,sH,eH)
{
    if (stop)
        return;
    var x=parseInt(i.top)+(dR? step: -step); 
    if(dR && x>sH)
        x=-eH;
    else if(x<2-eH)
        x=sH;i.top = x+'px';
} 

function startScroll(sN,txt)
{
    var scr=document.getElementById(sN); 
    var sW = objWidth(scr)-6; 
    var sH = objHeight(scr); 
    scr.innerHTML = '<div id="'+sN+'in" style="position:absolute; left:3px; width:'+sW+';" onMouseover="stop=true;" onMouseout="stop=false;">'+txt+'<\/div>'; 
    var sTxt=document.getElementById(sN+'in'); 
    var eH=objHeight(sTxt); 
    sTxt.style.top=(dR? -eH : sH)+'px'; 
    sTxt.style.clip='rect(0,'+sW+'px,'+eH+'px,0)'; 
    setInterval(function() {scrF(sTxt.style,sH,eH);},1000/speed);
}
//window.onload = addScrollers;