function checkBrowser() {
  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
}

var loop, timer
var rapidez=50

function makeObj(obj,nest) {
  navegador=new checkBrowser()
  nest=(!nest) ? '':'document.'+nest+'.';
  this.el=navegador.dom?document.getElementById(obj):navegador.ie4?document.all[obj]:navegador.ns4?eval(nest+'document.'+obj):0;
  this.css=navegador.dom?document.getElementById(obj).style:navegador.ie4?document.all[obj].style:navegador.ns4?eval(nest+'document.'+obj):0;
  this.scrollHeight=navegador.ns4?this.css.document.height:this.el.offsetHeight
  this.clipHeight=navegador.ns4?this.css.clip.height:this.el.offsetHeight
  this.up=goUp;this.down=goDown;
  this.moveIt=moveIt; this.x; this.y;
  this.obj = obj + "Object"
  eval(this.obj + "=this")
  return this
}

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

function goDown(move,nest){
  var largo;
  eval("largo = " + nest + ".clipHeight");
  if(this.y>-this.scrollHeight+largo){
    this.moveIt(0,this.y-move)
    if(loop) setTimeout(this.obj+".down("+move+",'"+nest+"')",rapidez)
  }
}

function goUp(move) {
  if(this.y<0) {
    this.moveIt(0,this.y-move)
    if(loop) setTimeout(this.obj+".up("+move+")",rapidez)
  }
}

function scroll1(rapidez) {
  if(loaded) {
    loop=true;
    if(rapidez>0) oScroll1.down(rapidez,'oCont1')
    else oScroll1.up(rapidez)
  }
}

function noScroll() {
  loop=false;
  if(timer) clearTimeout(timer)
}

var loaded;
function scrollInit() {
  oCont1=new makeObj('divCont1');
  oScroll1=new makeObj('divText1','divCont1');
  oScroll1.moveIt(0,0);
  oCont1.css.visibility='visible';
  loaded=true;
}