// JavaScript Document
function $g(ele){
	return document.getElementById(ele);	
}

function changeButton(act, ele){
	if(act == 1){
		$g(ele + "Button").style.backgroundPosition = "bottom";
	} else {
		$g(ele + "Button").style.backgroundPosition = "top";
	}
	
}
function subMenuAni(act, ele){
	if(act == 1){
		$g(ele + "_subMenu").style.backgroundPosition = "bottom right";
	} else {
		$g(ele + "_subMenu").style.backgroundPosition = "top right";
	}	
}

var prevID = "";
function selectButton(act, ele){
	if(prevID != ""){
		$g(prevID + "_details").style.display = "none";
	}
	
	$g(ele + "Button").style.backgroundPosition = "bottom";
	$g(ele + "_details").style.display = "block";
	
	prevID = ele;
}

// JavaScript Document
var TimeToFade = 300.0;

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 subMenuAni(act, ele){
	if(act == 1){
		$g(ele + "_subMenu").style.backgroundPosition = "bottom right";
		document.getElementById(ele + "_desc").style.display = "block";
		fade(ele + "_desc");
	} else {
		$g(ele + "_subMenu").style.backgroundPosition = "top right";
		document.getElementById(ele + "_desc").style.display = "none";
		fade(ele + "_desc");
	}	
}