var timer;
var content = "ScrollContent";
var content_one = "ScrollMenu";
var content_two = "NormalMenu";
var content_up = "ScrollUp";
var content_down = "ScrollDown";
var content_button = "ScrollButton";
var position = 0;
var speed = 4;
var height = 0;

function scrollInit()
{
  if ( get_cookie("timer") < 0 )
  {
    position = get_cookie("timer");
//alert(document.getElementById(content).offsetHeight);
    if ( !( position <= 0 && ( position * speed - speed ) > ( ( document.getElementById(content).offsetHeight * -1 ) + height ) ) ) position = 0;
    document.getElementById(content).style.top = position * speed + "px"; 
  }
  else position = 0;
  
  height = document.getElementById(content_one).offsetHeight;

  if ( get_cookie("scroll") == 1 )
  {
    set_cookie("scroll", 1, 0, 0, 0, '/');
    scrollOn();
  }
  else
  {
    set_cookie("scroll", 0, 0, 0, 0, '/');
    scrollOff();
  }
}
function scrollUp(type)
{
  if ( type == 1 && document.getElementById(content) && position < 0 )
  { 
    position++;
    document.getElementById(content).style.top = position * speed + "px"; 

    timer = setTimeout("scrollUp(1)",50);
  }
  else
  {
    clearTimeout(timer);
    set_cookie("timer", position, 0, 0, 0, '/');
  }
}
function scrollDown(type)
{
  if ( type == 1 && document.getElementById(content) && position <= 0 && ( position * speed ) > Math.round( ( ( document.getElementById(content).offsetHeight * -1 ) + height ) / speed ) * speed )
  {
    position--; 
    document.getElementById(content).style.top = position * speed + "px"; 

    timer = setTimeout("scrollDown(1)",50);
  }
  else
  {
    clearTimeout(timer);
    set_cookie("timer", position, 0, 0, 0, '/');
  }
}
function scrollOff()
{
    document.getElementById(content_one).style.display	= "none";
    document.getElementById(content_up).style.display	= "none";
    document.getElementById(content_down).style.display	= "none";
    document.getElementById(content_two).style.display	= ""; 
    document.getElementById(content_button).innerHTML	= '<a href="javascript:scrollOn()" class="Min">&nbsp;</a>';
    set_cookie("scroll", 0, 0, 0, 0, '/');
}
function scrollOn()
{
    document.getElementById(content_one).style.display	= "";
    document.getElementById(content_up).style.display	= "";
    document.getElementById(content_down).style.display	= "";
    document.getElementById(content_two).style.display	= "none"; 
    document.getElementById(content_button).innerHTML	= '<a href="javascript:scrollOff()" class="Max">&nbsp;</a>';
    set_cookie("scroll", 1, 0, 0, 0, '/');
}