var number_testimonials = 15; 
var current_testimonial = 0;
var testimonials = [];
for(var i = 1; i <= number_testimonials; i++){
  testimonials.push(document.getElementById('test'+i));

}

function show_testimonial(){
	
	 for(var i = 100; i >= 0; i--){
    fade_timeout = setTimeout('set_opacity(\''+testimonials[current_testimonial].id+'\', '+i+')', i * 10);
  }	
  testimonials[current_testimonial].style.display = 'none';
  current_testimonial++;
  if(current_testimonial >= number_testimonials){
    current_testimonial = 0;
  }
  testimonials[current_testimonial].style.display = 'block';
  fade_in(testimonials[current_testimonial]);

}

var fade_timeout;
function fade_in(el){
  for(var i = 0; i <= 100; i++){
    fade_timeout = setTimeout('set_opacity(\''+el.id+'\', '+i+')', i * 10);
  }
}

function set_opacity(id, opacity) {
	//alert(opacity);
  var el = document.getElementById(id);
  opacity = (opacity == 100)?99.999:opacity;
  el.style.filter = "alpha(opacity:"+opacity+")";
  el.style.KHTMLOpacity = opacity/100;
  el.style.MozOpacity = opacity/100;
  el.style.opacity = opacity/100;
}
//setTimeout('show_testimonial()', 2000);
window.setInterval("show_testimonial()",5000);