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);
}


img2 = new Image()


seconds = "5";

function imgOne()
{
    setTimeout("fade('fadeblock')", seconds * 780)
    setTimeout("imgTwo(), fade('fadeblock')", seconds * 1000);
}
function imgTwo()
{
    document.ghImg.src = 'images/header/glass_restoration.jpg';
    setTimeout("fade('fadeblock')", seconds * 780)
    setTimeout("imgThree(), fade('fadeblock')", seconds * 1000);
}
function imgThree()
{
    document.ghImg.src = 'images/header/glass_crown.jpg';
    setTimeout("fade('fadeblock')", seconds * 780)
    setTimeout("imgFour(), fade('fadeblock')", seconds * 1000);
}
function imgFour()
{
    document.ghImg.src = 'images/header/glass_modern.jpg';
    setTimeout("fade('fadeblock')", seconds * 780)
    setTimeout("imgFive(), fade('fadeblock')", seconds * 1000);
}
function imgFive()
{
    document.ghImg.src = 'images/header/glass_servey.jpg';
    setTimeout("fade('fadeblock')", seconds * 780)
    setTimeout("imgSix(), fade('fadeblock')", seconds * 1000);
}

function imgSix()
{
    document.ghImg.src = 'images/header/glass_bull.jpg';
    setTimeout("fade('fadeblock')", seconds * 780)
    setTimeout("imgSeven(), fade('fadeblock')", seconds * 1000);
}
function imgSeven()
{
    document.ghImg.src = 'images/header/glass_alleman.jpg';
    setTimeout("fade('fadeblock')", seconds * 780)
    setTimeout("imgEight(), fade('fadeblock')", seconds * 1000);
}
function imgEight()
{
    document.ghImg.src = 'images/header/glass_soldiers.jpg';
    setTimeout("imgOne()", seconds * 200);
}

function uHover(q){ 
document.getElementById(q).setAttribute('src','images/' + q + '_hover.png') 
} 
function uReset(q){ 
document.getElementById(q).setAttribute('src','images/' + q + '.png') 
}

function toggle(questionaire, results) {
	document.getElementById(questionaire).style.visibility="visible";
	document.getElementById(results).style.visibility="visible";
}
function hide(questionaire, results) {
	document.getElementById(questionaire).style.visibility="hidden";
	document.getElementById(results).style.visibility="hidden";
}