// JavaScript Document
// funciones para movilidad de fotos dinámicas


function applyeffect(photoslider){
	if (document.all && photoslider.filters){
		photoslider.filters.revealTrans.Transition=23
		photoslider.filters.revealTrans.stop()
		photoslider.filters.revealTrans.apply()
	}
}

function playeffect(photoslider){
	if (document.all && photoslider.filters)
		photoslider.filters.revealTrans.play()
}

function keeptrack(photos, which){
	window.status="Image "+(which+1)+" of "+photos.length
}


function backward(photos, photoslider, which){
	if (which>0){ which-- }
	else { which = photos.length-1 }
	applyeffect(photoslider, photos, which)
	photoslider.src=photos[which]
	playeffect(photoslider)
	keeptrack(photos,which)
	return which
}

function forward(photos, photoslider, which){
	if (which<photos.length-1){ which++ }
	else { which = 0 }
	applyeffect(photoslider, photos, which)
	photoslider.src=photos[which]
	playeffect(photoslider)
	keeptrack(photoslider, which)
	return which
}

function transport(photoslink, which){
    if(photoslink[which] == null) 
		{alert("Este elemento no tiene mayor información","No existe más información");}
	else 
		{window.open(photoslink[which] ,'_blank','width=640, height=480, resizable=yes');}
}