function hideall()
{
  document.all.week1.style.display = "none";
  document.all.week2.style.display = "";
  document.all.week3.style.display = "";  
  document.all.week4.style.display = "none";

  document.all.dot1.style.display = "none";
  document.all.dot2.style.display = "";
  document.all.dot3.style.display = "none";

  document.all.up1.style.display = "";
  document.all.up2.style.display = "none"

  document.all.down1.style.display = "none"
  document.all.down2.style.display = "";
}

function showweek1()
{
  document.all.week1.style.display = "";
  document.all.week2.style.display = "";
  document.all.week3.style.display = "none";  
  document.all.week4.style.display = "none";

  document.all.dot1.style.display = "";
  document.all.dot2.style.display = "none";
  document.all.dot3.style.display = "none";

  document.all.up1.style.display = "none";
  document.all.up2.style.display = "none"

  document.all.down1.style.display = ""
  document.all.down2.style.display = "none";
}

function showweek2()
{
  hideall();
}

function showweek3()
{
  document.all.week1.style.display = "none";
  document.all.week2.style.display = "none";
  document.all.week3.style.display = "";  
  document.all.week4.style.display = "";

  document.all.dot1.style.display = "none";
  document.all.dot2.style.display = "none";
  document.all.dot3.style.display = "";

  document.all.up1.style.display = "none";
  document.all.up2.style.display = ""

  document.all.down1.style.display = "none"
  document.all.down2.style.display = "none";
}

function showHide(o,v) 
{ 
  var obj;
  obj = document.all(o);
  if (obj.style) { 
    obj = obj.style; 
    v = (v=='show')?'visible':(v=='hide')?'hidden':v; 
  }
  obj.visibility = v;

  if (v=='visible') {
    var ex = window.event.x;
    var ey = document.body.scrollTop + (window.event.y) - window.event.offsetY;
    
    obj.top = ey;
    obj.left = ex - 415;  
  }  
}

function showMyself()
{
  document.all("Layer1").style.visibility = "visible";
}