var srlData_f = document.getElementById? document.getElementById("Data_f") : document.all.Data_f;
var hgtData_f = srlData_f.offsetHeight;

function Scroll_up_f(btnSpeed){

  if(btnSpeed == 1){ Speed_f = 3;}
  if (parseInt(srlData_f.style.top) <= 0){
    srlData_f.style.top = parseInt(srlData_f.style.top) + Speed_f + "px";}

  upTimer_f=setTimeout("Scroll_up_f()",30);
}

function Scroll_dwn_f(btnSpeed){

  if(btnSpeed == 1){ Speed_f = 3;}
  if (parseInt(srlData_f.style.top) >= (hgtData_f*(-1) + 150)){
    srlData_f.style.top = parseInt(srlData_f.style.top) - Speed_f + "px";}

  dwnTimer_f = setTimeout("Scroll_dwn_f()",30);
}

function getHgtData_f(){
  hgtData_f = srlData_f.offsetHeight;
}