function softScrollBack() {
   if(navigator.appName == "Microsoft Internet Explorer" && document.compatMode == "CSS1Compat") {
      var scdist = document.body.parentNode.scrollTop;
   } else {
      var scdist = document.body.scrollTop;
   }
   if(scrj<50 && scdist) {
      scdist = (scdist>2) ? Math.ceil(scdist*.2) : 1;
      scrj++;
      scrollBy(0,-scdist);
      setTimeout("softScrollBack()",20);
   } else {
      scrollTo(0,0);
      scrj = 1;
   }
}

function getWindowHeight(){
  if(window.innerHeight) return window.innerHeight; // Mozilla, Opera, NN4
  if(document.documentElement && document.documentElement.clientHeight){ //IE
   return document.documentElement.clientHeight;
  }
  else if(document.body && document.body.clientHeight){
   return document.body.clientHeight;
  }
  return 0;
}

function getWindowWidth(){
  if(window.innerWidtht) return window.innerWidth; // Mozilla, Opera, NN4
  if(document.documentElement && document.documentElement.clientWidth){ //IE
   return document.documentElement.clientWidth;
  }
  else if(document.body && document.body.clientWidth){
   return document.body.clientWidth;
  }
  return 0;
}

function getWinXOffset(){
  if(window.scrollX) return window.scrollX; // Moziila
  if(window.pageXOffset) return window.pageXOffset; // Opera, NN4
  if(document.documentElement && document.documentElement.scrollLeft){ //IE
   return document.documentElement.scrollLeft;
  }
  else if(document.body && document.body.scrollLeft){
   return document.body.scrollLeft;
  }
  return 0;
}
function getWinYOffset(){
  if(window.scrollY) return window.scrollY; // Mozilla
  if(window.pageYOffset) return window.pageYOffset; // Opera, NN4
  if(document.documentElement && document.documentElement.scrollTop){ //IE
   return document.documentElement.scrollTop;
  }
  else if(document.body && document.body.scrollTop){
   return document.body.scrollTop;
  }
  return 0;
}



var mov = new wrapScroll('topbtn','sitearea');
sy=getWindowHeight();
mov.marginTop = sy - 60;


var scrj = 1;