var TimeToFade = 500.0;

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 changeTestimonial(which_testimonial) {
	var what_to_write ="";
	if (testimonials[which_testimonial][4]) {
		what_to_write = "<img src='" + site_url + "/testimonialphotos/" + testimonials[which_testimonial][4] + "' id='testimonial_photo'>";
	}
	what_to_write += "<span style='color: white; font-size:" + testimonials[which_testimonial][2] + "px; line-height:" + testimonials[which_testimonial][2]*1.1 + "px;'>\"" + testimonials[which_testimonial][0] + "\"</span><br><span style='color: black; font-size:" + testimonials[which_testimonial][3] + "px; line-height:" + testimonials[which_testimonial][3]*1.2 + "px;'>" + testimonials[which_testimonial][1] + "</span>";
	document.getElementById("testimonial_text").innerHTML = what_to_write;
	fade("testimonial_wrapper");
	setTimeout("fade('testimonial_wrapper')", testimonials[which_testimonial][5]*1000);
	if (which_testimonial == testimonials.length-1) {
		next_testimonial = 0;
	} else {
		next_testimonial = which_testimonial + 1;
	}
	setTimeout("changeTestimonial(next_testimonial)", testimonials[which_testimonial][5]*1000 + 1000);

}

//+ Jonas Raoni Soares Silva
//@ http://jsfromhell.com/array/shuffle [v1.0]

shuffle = function(o){ //v1.0
	for(var j, x, i = o.length; i; j = parseInt(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x);
	return o;
};