var TimeToFade = 390.0;

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 fade(eid)
{
  var element = document.getElementById(eid);
  //sempre Obrim
  element.FadeState=-2;
  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 ini(lol){
	mostra(lol);
}

var skillsNum=1;


function updateSkills(){
	document.getElementById("goskillsss").innerHTML=" "+skillsNum;
}

function mostraSkills(lol){
//	mataTot();
	document.getElementById(lol+skillsNum).style.display="none";
	document.getElementById(lol+skillsNum).style.visibility="hidden";
	skillsNum++;

	if (skillsNum>3) skillsNum=1;
	updateSkills();
	piwikTracker.trackGoal(skillsNum+3);
	fade(lol+skillsNum);
	document.getElementById(lol+skillsNum).style.display="block";
	document.getElementById(lol+skillsNum).style.visibility="visible";
	document.getElementById('go'+skillsNum).className+="selected";
}

function mostra(lol){
	mataTot();
	fade(lol);
	document.getElementById(lol).style.display="block";
	document.getElementById(lol).style.visibility="visible";
	document.getElementById('go'+lol).className+="selected";
}


function mataTot(){
	document.getElementById('goexp').className="h2";
	document.getElementById("exp").style.visibility="hidden";
	document.getElementById("exp").style.display="none";

	document.getElementById('goed').className="h2";
	document.getElementById("ed").style.visibility="hidden";
	document.getElementById("ed").style.display="none";

	document.getElementById('goskills').className="h2";
	document.getElementById("skills").style.visibility="hidden";
	document.getElementById("skills").style.display="none";

	updateSkills();

	document.getElementById("skills"+skillsNum).style.visibility="visible";
	document.getElementById("skills"+skillsNum).style.display="block";
}

function getDisplay(){
	alert(document.getElementById("exp").style.display);
	alert(document.getElementById("ed").style.display);
	alert(document.getElementById("skills").style.display);
}