var imagenumber = 8; 
var randomnumber = Math.random(); 
var rand1 = Math.round( (imagenumber-1) * randomnumber); 

images = new Array; 
images[0] = "Ayuntamiento de Corvera"; 
images[1] = "Ayuntamiento de Corvera"; 
images[2] = "Ayuntamiento de Corvera";
images[3] = "Ayuntamiento de Corvera";
images[4] = "Ayuntamiento de Corvera";
images[5] = "Ayuntamiento de Corvera";
images[6] = "Ayuntamiento de Corvera";



links = new Array; 
links[0] = "upload/cabecera/AyuntamientodeCorvera.jpg"; 
links[1] = "upload/cabecera/cabecera_corvera1.jpg"; 
links[2] = "upload/cabecera/cabecera_corvera2.jpg"; 
links[3] = "upload/cabecera/cabecera_corvera3.jpg";
links[4] = "upload/cabecera/cabecera_corvera4.jpg";
links[5] = "upload/cabecera/cabecera_corvera5.jpg";
links[6] = "upload/cabecera/cabecera_corvera6.jpg";


var image = images[rand1]; 
var link = links[rand1];