var userAgent=navigator.userAgent;

if(userAgent.indexOf('Windows') != -1 && userAgent.indexOf('MSIE') != -1)
{
    var speed_adjust = 70;
}
else if(userAgent.indexOf('Windows') != -1 && userAgent.indexOf('Firefox') != -1)
{
   var speed_adjust = 65;
}
else if(userAgent.indexOf('Windows') != -1 && userAgent.indexOf('Netscape') != -1)
{
   var speed_adjust = 65;
}
else if(userAgent.indexOf('Mac') != -1 && userAgent.indexOf('MSIE') != -1)
{
   var speed_adjust = 1;
}
else if(userAgent.indexOf('Mac') != -1 && userAgent.indexOf('Firefox') != -1)
{
   var speed_adjust = 35;
}
else if(userAgent.indexOf('Mac') != -1 && userAgent.indexOf('Safari') != -1)
{
   var speed_adjust = 1;
}
else if(userAgent.indexOf('Mac') != -1 && userAgent.indexOf('Camino') != -1)
{
   var speed_adjust = 15;
}
else
{
   var speed_adjust = 35;
}
/**
if(userAgent.indexOf('Windows') != -1 && userAgent.indexOf('MSIE') != -1)
{
    var speed_adjust = 70;
}
else if(userAgent.indexOf('Windows') != -1 && userAgent.indexOf('Firefox') != -1)
{
   var speed_adjust = 60;
}
else if(userAgent.indexOf('Windows') != -1 && userAgent.indexOf('Netscape') != -1)
{
   var speed_adjust = 65;
}
else if(userAgent.indexOf('Mac') != -1 && userAgent.indexOf('MSIE') != -1)
{
   var speed_adjust = 1;
}
else if(userAgent.indexOf('Mac') != -1 && userAgent.indexOf('Firefox') != -1)
{
   var speed_adjust = 35;
}
else if(userAgent.indexOf('Mac') != -1 && userAgent.indexOf('Safari') != -1)
{
   var speed_adjust = 1;
}
else if(userAgent.indexOf('Mac') != -1 && userAgent.indexOf('Camino') != -1)
{
   var speed_adjust = 15;
}
else
{
   var speed_adjust = 35;
}
**/
<!-- SCROLLER 1 -->
var V4LvlA="v4Lvl1content",V4LvlT;
function V4LvlScroll(d,s,o,n){ //v1.1 4LevelWebs
 var q,x,p="",r=parseInt(n),u=parseInt(o),k=document.layers;if(!k){p="px"}if((x=MM_findObj(V4LvlA))!=null){q=(document.layers)?x:x.style}
 var c=clearTimeout(V4LvlT),j=d==5&&!k?u:0,h=k?parseInt(x.clip.height):parseInt(x.offsetHeight);
 var v=parseInt(s),f=10,y=q.top?parseInt(q.top):j;if(d==6){if(y<o){q.top=y+u+p;if(-y<o||y>=0){q.top=0}}}else
 if(d==7){if(-y<h){q.top=y-n+p;if(-y+r>h-n){q.top=-h+r+p}}}else{if(d==1&&y<r){q.top=y+v+p}if(d==2&&y>-h+u){q.top=y-v+p}
 if(d==3){q.top=0}if(d==4){q.top=-h+u+p}if(d==5){f=speed_adjust;if(y>-h){q.top=y-v+p}if(y==-h){q.top=o+p}}
 if(d==8){q.top=y<0?y+v+p:y>v?y-v+p:0}if(d==10&&y>-h+u){q.top=y-v+p}
 V4LvlT=setTimeout("V4LvlScroll('"+d+"','"+s+"','"+o+"','"+n+"')",f)}
}
function V4LvlStop(){
clearTimeout(V4LvlT);
}
<!-- SCROLLER 1 -->

<!-- SCROLLER 2 -->
var V4LvlA2="v4Lvl2content",V4LvlT2;
function V4LvlScroll2(d,s,o,n){ //v1.1 4LevelWebs
 var q,x,p="",r=parseInt(n),u=parseInt(o),k=document.layers;if(!k){p="px"}if((x=MM_findObj(V4LvlA2))!=null){q=(document.layers)?x:x.style}
 var c=clearTimeout(V4LvlT2),j=d==5&&!k?u:0,h=k?parseInt(x.clip.height):parseInt(x.offsetHeight);
 var v=parseInt(s),f=10,y=q.top?parseInt(q.top):j;if(d==6){if(y<o){q.top=y+u+p;if(-y<o||y>=0){q.top=0}}}else
 if(d==7){if(-y<h){q.top=y-n+p;if(-y+r>h-n){q.top=-h+r+p}}}else{if(d==1&&y<r){q.top=y+v+p}if(d==2&&y>-h+u){q.top=y-v+p}
 if(d==3){q.top=0}if(d==4){q.top=-h+u+p}if(d==5){f=speed_adjust;if(y>-h){q.top=y-v+p}if(y==-h){q.top=o+p}}
 if(d==8){q.top=y<0?y+v+p:y>v?y-v+p:0}if(d==10&&y>-h+u){q.top=y-v+p}
 V4LvlT2=setTimeout("V4LvlScroll2('"+d+"','"+s+"','"+o+"','"+n+"')",f)}
}
function V4LvlStop2(){
clearTimeout(V4LvlT2);
}
<!-- SCROLLER 2 -->