/* Precarga de imagenes */
var aImagenes = new Array();
aImagenes = ["0","1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31"];
var iImg = aImagenes.length - 1;
for (i = 0; i < aImagenes.length; i++) {
  eval("img" + i + " = new Image();");
  eval("img" + (i) + ".src = \"img/ppal/img-" + aImagenes[i] + ".jpg\";");
}