function unhide(obj)
{
  var el = document.getElementById(obj);
  if(el != null)
  {
    if(el.style.display == "inline")
      el.style.display = "none";
    else
      el.style.display = "inline";
  }
}

function toggle(obj)
{
  var el = document.getElementById(obj);
  if(el != null)
  {
	  if(el.style.display != 'none')
	    el.style.display = 'none';
    else
  	  el.style.display = 'block';
  }
}

function swapContent(obj, val)
{
  var el = document.getElementById(obj);
  var elType = el.type;
  var blue = "#336699";
  var black = "#000000";
  if(el != null)
  {
    var oldval;
    if(elType == 'textarea')
      oldval = el.innerHTML;
    else
      oldval = el.value;
    if(oldval == val)
    {
      if(elType == 'textarea')
        el.innerHTML = "";
      else
        el.value = "";
      el.style.color = blue;
    }
    else if(oldval == "")
    {
      if(elType == 'textarea')
        el.innerHTML = val;
      else
        el.value = val;
      el.style.color = black;
    }
  }
}

var TimeToFade = 1000.0;

function fade(eid)
{
  var element = document.getElementById(eid);
  if(element == null)
    return;

  if(element.FadeState == null)
  {
    if(element.style.opacity == null
        || element.style.opacity == ''
        || element.style.opacity == '1')
    {
      element.FadeState = 2;
    }
    else
    {
      element.FadeState = -2;
    }
  }

  if(element.FadeState == 1 || element.FadeState == -1)
  {
    element.FadeState = element.FadeState == 1 ? -1 : 1;
    element.FadeTimeLeft = TimeToFade - element.FadeTimeLeft;
  }
  else
  {
    element.FadeState = element.FadeState == 2 ? -1 : 1;
    element.FadeTimeLeft = TimeToFade;
    setTimeout("animateFade(" + new Date().getTime() + ",'" + eid + "')", 33);
  }
}

function animateFade(lastTick, eid)
{
  var curTick = new Date().getTime();
  var elapsedTicks = curTick - lastTick;

  var element = document.getElementById(eid);

  if(element.FadeTimeLeft <= elapsedTicks)
  {
    element.style.opacity = element.FadeState == 1 ? '1' : '0';
    element.style.filter = 'alpha(opacity = '
        + (element.FadeState == 1 ? '100' : '0') + ')';
    element.FadeState = element.FadeState == 1 ? 2 : -2;
    return;
  }

  element.FadeTimeLeft -= elapsedTicks;
  var newOpVal = element.FadeTimeLeft/TimeToFade;
  if(element.FadeState == 1)
    newOpVal = 1 - newOpVal;

  element.style.opacity = newOpVal;
  element.style.filter = 'alpha(opacity = ' + (newOpVal*100) + ')';

  setTimeout("animateFade(" + curTick + ",'" + eid + "')", 33);
}

var Copyright = {
  /*showContext: function ()
  {
    var c = document.getElementById("copyright_context");
    if (c)
    {
      c.style.display = "block";
      c.style.height = Math.max(Math.max(document.body.scrollHeight, document.documentElement.scrollHeight), Math.max(document.body.offsetHeight, document.documentElement.offsetHeight), Math.max(document.body.clientHeight, document.documentElement.clientHeight)) + "px"
    }
    var b = document.getElementById("copyright_protected");
    if (b)
    {
      b.style.display = "block";
      var a = 200;
      if (window.pageYOffset)
      {
        a += window.pageYOffset
      }
      else
      {
        a += document.documentElement.scrollTop
      }
      b.style.top = a + "px"
    }
    return false
  },
  hideContext: function ()
  {
    var b = document.getElementById("copyright_context");
    if (b)
    {
      b.style.display = "none"
    }
    var a = document.getElementById("copyright_protected");
    if (a)
    {
      a.style.display = "none"
    }
  }*/
};