if ((navigator.appName == "Netscape") && (navigator.appVersion.substring(0,1) >= 4))
{
 var all = "";
 var style = "";
}
else if ((navigator.appName.substring(0,9) == "Microsoft") && (navigator.appVersion.substring(0,1) >= 4))
{
 var all = "all.";
 var style = ".style";
}
 
function scrollSpeed(num)
{
 if (num == 1)
 {
  if (navigator.appName == "Netscape")
  {
   scrollspeed = 2;
  }
  else
  {
   scrollspeed = 2;
  }
 }
 if (num == 2)
 {
  if (navigator.appName == "Netscape")
  {
   scrollspeed = 10;
  }
  else
  {
   scrollspeed = 10;
  }
 } 
}
 
 
function scrollDown()
{
 posy = Number(document.all.links.style.top.substring(0,document.all.links.style.top.length-2));
 alt_frame = document.body.offsetHeight;
 alt_div = Number(document.all.links.offsetHeight);

 if (scroll >= scrollbottom)
 {
  if (navigator.appName == "Netscape")
  {
   scroll = scroll - scrollspeed;
   scrollcliptop = scrollcliptop + scrollspeed;
   scrollclipbottom = scrollclipbottom + scrollspeed;
   document.links.clip.top = scrollcliptop;
   document.links.clip.bottom = scrollclipbottom;
   eval("document."+ all +"links"+ style +".top = scroll;");
  }
 
  if ((navigator.appName.substring(0,9) == "Microsoft"))
  {
   scroll = scroll - scrollspeed;
   scrollcliptop = scrollcliptop + scrollspeed;
   scrollclipbottom = scrollclipbottom + scrollspeed;
   document.all.links.style.clip = "rect("+scrollcliptop+"px "+larguratop+"px "+scrollclipbottom+"px 0px)";
   eval("document."+ all +"links"+ style +".top = scroll;");
    }
 outid = window.setTimeout('scrollDown()', 10);
 }
}
 
 
function scrollUp(){
  if (scroll < scrollup)
  {
   if (navigator.appName == "Netscape"){
	scroll = scroll + scrollspeed;
	scrollcliptop = scrollcliptop - scrollspeed;
	scrollclipbottom = scrollclipbottom - scrollspeed;
	document.links.clip.top = scrollcliptop;
	document.links.clip.bottom = scrollclipbottom;
	eval("document."+ all +"links"+ style +".top = scroll;");}
   
   if ((navigator.appName.substring(0,9) == "Microsoft")){
    scroll = scroll + scrollspeed;
    scrollcliptop = scrollcliptop - scrollspeed;
    scrollclipbottom = scrollclipbottom - scrollspeed;
    document.all.links.style.clip = "rect("+scrollcliptop+"px "+larguratop+"px "+scrollclipbottom+"px 0px)";
    eval("document."+ all +"links"+ style +".top = scroll;");}
	overid = window.setTimeout('scrollUp()', 10);
  }
}