var imagenumber = 7; 
var randomnumber = Math.random(); 
var rand1 = Math.round( (imagenumber-1) * randomnumber); 

images = new Array; 
images[0] = "http://www.ugr.es/local/clm/imag/opiniones/daniela_juri.gif"; 
images[1] = "http://www.ugr.es/local/clm/imag/opiniones/ana_paula.gif"; 
images[2] = "http://www.ugr.es/local/clm/imag/opiniones/nicoleta_duciu.gif";
images[3] = "http://www.ugr.es/local/clm/imag/opiniones/maria_arnault.gif"; 
images[4] = "http://www.ugr.es/local/clm/imag/opiniones/catherine_nelson.gif"; 
images[5] = "http://www.ugr.es/local/clm/imag/opiniones/virginia_de_la_o.gif"; 
images[6] = "http://www.ugr.es/local/clm/imag/opiniones/kari_soriano.gif";  


links = new Array; 
links[0] = "opiniones.htm#00"; 
links[1] = "opiniones.htm#01"; 
links[2] = "opiniones.htm#02";
links[3] = "opiniones.htm#03";
links[4] = "opiniones.htm#04"; 
links[5] = "opiniones.htm#05";
links[6] = "opiniones.htm#06";

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