var obj = '';
var obj2 = '';
var obj3 = '';
var color = 0;
var suma = 10;
var color2 = 0;
var suma2 = 10;
var llamada = 4;
var taparec;
var tdesap;
var tllama;
var ulti = 0;
var bandera = 0;



function aparecer(){
		
 bandera = 1;
color += suma;
if (!(color>=110)){
obj.style.filter = 'alpha(opacity='+color+')';

			 obj.style.opacity = color /100;
			 obj.style.MozOpacity = color /100;
			 obj.style.KHTMLOpacity = color /100;
			//		window.setTimeout ("llama();", 100); 
	taparec=window.setTimeout ("aparecer();", 100);
}


}
function desvanecer() {
 bandera = 0;
		color2 -= suma2;
	if (!(color2 <=-10)){
	obj2.style.filter = 'alpha(opacity='+color2+')';
			 obj2.style.opacity = color2 /100;
			 obj2.style.MozOpacity = color2 /100;
			 obj2.style.KHTMLOpacity = color2 /100;
		tdesap=window.setTimeout ("desvanecer();", 100);
	}
	else{
	 bandera = 1;	
	obj2.style.display = "none";
	
	}
	}

	
	
	
	
	
function llama1(id, num){
	//Da el numero del div sgt
	llamada = num;
	if(num == ulti){
		num=1;
	}
	else num++;
	
	llama(id, num,llamada);
	
	
}
	
	
function llama(id,num,llamada ){
	obj = document.getElementById('rota'+id+'_'+num);
	obj2 = document.getElementById('rota'+id+'_'+llamada);
	
	color2= 110;
	color= 0; //coloca el div sgt en opaco y la muestra
	obj.style.filter = 'alpha(opacity='+color+')';
	obj.style.opacity = color;
	obj.style.MozOpacity = color;
	obj.style.KHTMLOpacity = color;
	obj.style.display = "block";
	
	desvanecer();
	aparecer();
 
tllama=window.setTimeout ("llama1('"+id+"', '"+ num +"');", 8200);
bandera = 1;
}



function efecto_div(id, num,cant){
	//	id : id del rotador
	//	num : numero del div que se muestra
	//	cant : cantidad de divs que forman el rotador
	ulti = cant;
	var i = 2; 
	while(i!=ulti+1){
		obj = document.getElementById('rota'+id+'_'+i);
		obj.style.display = "none";
		i++;
	}
	
	tllama=window.setTimeout ("llama('"+id+"',2,1);", 3200);
}



function button1(id, n_div){

	if(bandera == 1){
window.clearTimeout(tllama);	
window.clearTimeout(tdesap);	
window.clearTimeout(taparec);

	color= 110;
i=1
while(i!=ulti){
		obj_temp = document.getElementById('rota'+id+'_'+i);
		obj_temp.style.filter = 'alpha(opacity='+color+')';
		obj_temp.style.opacity = color;
		obj_temp.style.MozOpacity = color;
		obj_temp.style.KHTMLOpacity = color;
		obj_temp.style.display = "none";
		i++;
		
	}
	
obj2 = obj
	obj = document.getElementById('rota'+id+'_'+n_div);
	obj2.style.display = "none";
	obj.style.display = "block";
	//aparecer();

	var num = n_div +1;
	tllama=window.setTimeout ("llama1('"+id+"', '"+ n_div +"');", 10000);

}}