var i; 
var imagenes = new Array("images/traider_t_bg.gif","images/main_t_bg.jpg","images/header_01.jpg","images/main_t_bg_t.jpg"); 
var lista_imagenes = new Array(); 
function pl(){
for(i in imagenes){ 
lista_imagenes[i] = new Image(); 
lista_imagenes[i].src = imagenes[i]; 
} 
}