var image_dir = "images/";
var ImageNum = 0;
var TotalNum = 0;

imageArray = new Array();
imageArray[ImageNum++] = image_dir + "Rsanmateo1_1.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_2.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_3.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_4.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_5.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_6.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_7.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_8.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_9.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_10.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_11.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_12.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_13.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_14.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_15.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_16.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_17.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_18.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_19.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_20.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_21.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_22.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_23.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_24.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_25.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_26.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_27.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_28.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_29.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_30.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_31.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_32.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_33.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_34.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_35.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_36.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_37.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_38.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_39.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_40.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_41.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_42.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_43.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_44.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_45.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_46.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_47.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_48.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_49.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_50.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_51.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_52.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_53.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_54.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_55.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_56.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_57.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_58.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_59.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_60.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_61.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_62.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_63.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_64.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_65.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_66.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_67.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_68.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_69.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_70.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_71.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_72.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_73.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_74.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_75.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_76.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_77.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_78.jpg";
imageArray[ImageNum++] = image_dir + "Rsanmateo1_79.jpg";

TotalNum = ImageNum;
ImageNum = -1;

function AvanzaImage()
{
   ImageNum++;
   if (ImageNum == TotalNum)
     ImageNum=0;
   document.mainimage.src = imageArray[ImageNum];
}

function RetrocedeImage()
{
   ImageNum--;
   if (ImageNum == -1)
     ImageNum= TotalNum - 1;
   document.mainimage.src = imageArray[ImageNum];
}