var curSlide = 1;
var tiempo = 5;		//tiempo en segundos
var slideDiv = "";
var slideDivCont = "";
var sURL = "scripts/getNSlide.php";
var nSlides = 1;
var wait = 0;
var anim = "";
YAHOO.util.Event.addListener(window, "load", initSlideshow);
function initSlideshow(){	
	slideDiv = document.getElementById("billboard");
	slideDivCont = document.getElementById("slideCont");
	anim = new YAHOO.util.Anim(slideDivCont, {opacity:{to:0}}, 2.5, YAHOO.util.Easing.easeOut);
	anim.onComplete.subscribe(changeSlide);
	YAHOO.util.Connect.asyncRequest("GET", sURL, {success:function(o){
															   nSlides = o.responseText;
															   slide();
															   }
															   });	
	//YAHOO.util.Event.addListener("slideCont", "mouseover", function(){clearTimeout(wait)});
	//YAHOO.util.Event.addListener("slideCont", "mouseout", function(){curSlide--;slide()});
}
function slide(){
	if(curSlide < nSlides){
		curSlide++;
	}else{		
		//curSlide = 1;	
		clearTimeout(wait);
	}
	document.getElementById("billboardblank").innerHTML = getImg();
	YAHOO.util.Event.onContentReady("billboardblank",  function(){
																YAHOO.util.Dom.setStyle(slideDiv, "background", ("url('"+getImgURL()+"')"));
																wait = setTimeout("anim.animate()", (tiempo*1000));
																});
	
}
function changeSlide(){
		slideDivCont.innerHTML = getImg();
		YAHOO.util.Dom.setStyle(slideDivCont, "opacity", 1);
		clearTimeout(wait);
		slide();
	}
function getImg(){
	return "<img src='"+getImgURL()+"' width='867' height='256' alt='Refrigeracion Industrial' />";	
}
function getImgURL(){
	return "images/billboards/slide_"+curSlide+".jpg";
}