var PSSem=0;
var APSTimer;
var APSDir=1;
function AutoPhotoSlide(){
	if(APSDir==1){
		if(!NextPhotoSlide())PrevPhotoSlide();
	}else{
		if(!PrevPhotoSlide())NextPhotoSlide();
	}
}
function NextPhotoSlide(){
	return PhotoSlide(1);
}
function PrevPhotoSlide(){
	return PhotoSlide(-1);
}
function PhotoSlide(d){
	clearTimeout(APSTimer);APSTimer=setTimeout(AutoPhotoSlide,5000);
	if(PSSem!=0) return true;
	APSDir=d;
	var a=PhotoSlideAux('#banda-uno-izq',d);
	var b=PhotoSlideAux('#banda-uno-der',d);
	return a|b;
}
function PhotoSlideAux(id,d){
	var l=parseInt($(id).css('left'));
	var q=$(id).children().length;
	var w=220;
	var tl=(q-1)*-w;
	if((d==1&&tl<l)||(d==-1&&l<0)){
		PSSem++;
		$(id).animate({
			left:(l-(w*d))+'px'
			},750,'swing',function(){PSSem--;}
		);
		return true;
	}
	return false;
}