var current = 1;
var t=null;
var oNext=null;
var oCurrent=null;
function goToPage(page){
  

	switch(page){
		case 'next':
			if(current==cuantas){
				page=1;
			}else{
				page=current+1;
			}
			
			
		break;
		
		case 'prev':
			if(current==1){
				page=cuantas;
			}else{
				page=current-1
			}
		break
		
		
	}
	
  
  if(!document.images['slideImg'+page].complete){
    	return false;
  }
  if(page!=cuantas){
    if(!document.images['slideImg'+(page+1)].complete){
      return false;
    }
  }
	
	if(page!=current){
		oCurrent=$('ii'+current);

		oRelleno=$('relleno'+current);

		next='ii'+page;

		oNext=$(next);

		//oCurrent.style.display='none';
		
		
		effectCurrent();
		
			
		//document.getElementById('imageEngineContainer').className='ImageEngineSlider_'+page;
		document.getElementById('imageEngineContainer').style.background='url('+document.images['slideImg'+page].src+')';
		
		

		//oRelleno.style.display='none';

		//new Effect.Grow(next, { duration: 0.3,fps:70});

		current=page;
	}
	
}



function displayNext(obj){
	oNext.style.display='block';
}

function initSlide(){
   
    clearInterval(t);
    if(intervalo<1000){
      intervalo=1000;
    }
    t=setInterval("nextPage()",intervalo);	
  
}

function nextPage(){
	goToPage('next');
}

function stopSlide(){
	clearInterval(t);
}

//window.onload=initSlide;