//foto
function foto(){
var rnd_number=Math.round(5*Math.random())
document.getElementById("top-img").style.backgroundImage = 'url(http://puntoip.es/wp-content/themes/puntoip/images/top-img-'+ rnd_number +'.jpg)';
	}
	
function foto_seccion(){
var rnd_number=Math.round(5*Math.random())
document.getElementById("top-img-inn").style.backgroundImage = 'url(http://puntoip.es/wp-content/themes/puntoip/images/top-img-inn-'+ rnd_number +'.jpg)';
	}