var vFirstClickr = new Boolean(false);

function changeDivImage(num){
	
	if((num == 1) || (num == -1) && (vFirstClickr == false)){
		clearInterval(vGalleryInterval);
		vFirstClickr = true;
	}
	
	if(num == 99){
		vContador += 1;
	}else{
		vContador += num;
	}
	    
	if(vContador > vNumPhotos){
		vContador = 1;
	}else if(vContador < 1){
		vContador = vNumPhotos;
    }
		
	document.getElementById("galeria").style.backgroundImage = "url(" + vRuta + vNomPhoto + vContador + vFormato + ")";
}

//······························································································································