// menu
function dropdownMenu(menuID, toppos)
{
	document.getElementById('dropdown'+menuID).style.display = 'block';
	// wrapper1 is the id of the main Div; because the page is centered this is used to work out how far in the page is (+ 59px margin)
	maintableLeft = document.getElementById('wrapper1').offsetLeft + 59 ;
	document.getElementById('dropdown'+menuID).style.left = maintableLeft + document.getElementById('td'+menuID).offsetLeft + 'px';
//	document.getElementById('dropdown'+menuID).style.left = document.getElementById('td'+menuID).offsetLeft + 'px' ;
	document.getElementById('dropdown'+menuID).style.top = toppos + 'px';
}
function dropupMenu(menuID)
{
	document.getElementById('dropdown'+menuID).style.display = 'none';	
}
 function show( targetId )
    {
  	if (document.getElementById)
        {
  		target = document.getElementById( targetId );
        target.style.display = "";
  		}
    }


 function hide( targetId )
    {
    
      if (document.getElementById)
        {
          target = document.getElementById( targetId );
        target.style.display = "none";
          }
    }
    
 
 function changeClass( targetId,targetClass )
    {
    
      if (document.getElementById)
        {
          target = document.getElementById( targetId );
          target.setAttribute("class", targetClass );
          }
    }
    
var TimeToFade = 2000.0;

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);

  }

  function sleep(delay)
{
    var start = new Date().getTime();
    while (new Date().getTime() < start + delay);
}
  
function pause( iMilliseconds )
{
  var sDialogScript = 'window.setTimeout( function () { window.close(); }, ' + iMilliseconds + ');';
  window.showModalDialog('javascript:document.writeln ("<script>' + sDialogScript + '<' + '/script>")');
}

function blockfill( eid )
{
    var element = document.getElementById(eid);
    element.style.opacity = 1;
}






    
function toggle_tree(id)
{
var plus_img = '/assets/images/expand.gif';
var minus_img = '/assets/images/collapse.gif';

var branch = document.getElementById("c_"+id);


if (branch)
if (branch.style.display == "none")
{
branch.style.display = "block";
img = document.getElementById("i_"+id);
img.src = minus_img;
}
else
{
branch.style.display = "none";
img = document.getElementById("i_"+id);
img.src = plus_img;
}
}