var a_photo1 = new Array();
 
a_photo1[0] = 'photo_home_x1.jpg';
a_photo1[1] = 'photo_home_x2.jpg';
a_photo1[2] = 'photo_home_x3.jpg';
 
i = 0;
 
var photo1_state = 0;
 
var photo1_intervalx = 7000;

var photo_silent = 400;
 
var photo1_intid;
 
function show_photo1(){
	if (photo1_state==0) {
		i++;
		i = i%a_photo1.length;
	}
	
	var o_photo = document.getElementById("photo1");
	if(o_photo) {
		imgfade('photo1', a_photo1[i]);
	}
 
	if (photo1_state==1)	{ photo1_interval = photo1_intervalx; photo1_state = 0; } 
	else								{ photo1_interval = photo_silent; photo1_state = 1; }
 
	clearInterval(photo1_intid);
	photo1_intid = setInterval("show_photo1()", photo1_interval);
 
}
 
function activate_photo() {
 
	photo1_intid = setInterval("show_photo1()",photo1_intervalx);
	
}
 
 
var TimeToFade = 200.0;
 
function imgfade(eid, imgsrc)
{
 
  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 + "', '"+imgsrc+"')", 33);
  } 
}
 
function animateFade(lastTick, eid, imgsrc)
{ 
  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;
	//alert('state='+element.FadeState);
	if (element.FadeState==-2) {
		//alert('state='+element.FadeState);
		element.src = "img/"+imgsrc;
	}
    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 + "', '"+imgsrc+"')", 33);
}