function rand ( n )
{
  return ( Math.floor ( Math.random ( ) * n + 1 ) );
}

var random_tall = new Array ( );
random_tall[0] = "BlessedG_Whippets_strip.jpg";
random_tall[1] = "BrownG_Poacher_strip.jpg";
random_tall[2] = "BrownriggG_Dawn_strip.jpg";
random_tall[3] = "BrownriggL_Miner_strip.jpg";
random_tall[4] = "CrichtonW_PitYard_strip.jpg";
random_tall[5] = "DobsonJ_Pugmill_strip.jpg";
random_tall[6] = "FloydJ_PidgeonCrees_strip.jpg";
random_tall[7] = "ForemanA_TheBar_strip.jpg";
random_tall[8] = "HarrisonJF_PonyPutter_strip.jpg";
random_tall[9] = "KilburnO_Progging_strip.jpg";
random_tall[10] = "LaidlerF_FishAndChips_strip.jpg";
random_tall[11] = "McLeanG_Bedside_strip.jpg";
random_tall[12] = "McSloyT_ArchGirders_strip.jpg";
random_tall[13] = "RankinA_Canteen_strip.jpg";
random_tall[14] = "RobinsonL_Bowler_strip.jpg";
random_tall[15] = "WhinnomA_PitIncident_strip.jpg";
random_tall[16] = "WilsonH_Colliery_strip.jpg";
random_tall[17] = "YoungsH_Besom_strip.jpg";

var random_small = new Array ( );
random_small[0] = "BlessedG_Whippets_thumb.jpg";
random_small[1] = "BrownG_Poacher_thumb.jpg";
random_small[2] = "BrownriggG_Dawn_thumb.jpg";
random_small[3] = "BrownriggL_Miner_thumb.jpg";
random_small[4] = "CrichtonW_PitYard_thumb.jpg";
random_small[5] = "DobsonJ_Pugmill_thumb.jpg";
random_small[6] = "FloydJ_PidgeonCrees_thumb.jpg";
random_small[7] = "ForemanA_TheBar_thumb.jpg";
random_small[8] = "HarrisonJF_PonyPutter_thumb.jpg";
random_small[9] = "KilburnO_Progging_thumb.jpg";
random_small[10] = "LaidlerF_FishAndChips_thumb.jpg";
random_small[11] = "McLeanG_Bedside_thumb.jpg";
random_small[12] = "McSloyT_ArchGirders_thumb.jpg";
random_small[13] = "RankinA_Canteen_thumb.jpg";
random_small[14] = "RobinsonL_Bowler_thumb.jpg";
random_small[15] = "WhinnomA_PitIncident_thumb.jpg";
random_small[16] = "WilsonH_Colliery_thumb.jpg";
random_small[17] = "YoungsH_Besom_thumb.jpg";

var artist_text = new Array ( );
artist_text[0] = "George Blessed";
artist_text[1] = "George Brown";
artist_text[2] = "George Brownrigg";
artist_text[3] = "Leslie Brownrigg";
artist_text[4] = "W Crichton";
artist_text[5] = "J Dobson";
artist_text[6] = "Jimmy Floyd";
artist_text[7] = "Andrew Foreman";
artist_text[8] = "J F Harrison";
artist_text[9] = "Oliver Kilbourn";
artist_text[10] = "Fred Laidler";
artist_text[11] = "George McLean";
artist_text[12] = "Tom McSloy";
artist_text[13] = "Andrew Rankin";
artist_text[14] = "Len Robinson";
artist_text[15] = "Arthur Whinnom";
artist_text[16] = "Harry Wilson";
artist_text[17] = "Harry Youngs";

var desc_text = new Array ( );
desc_text[0] = "Whippets";
desc_text[1] = "The Poacher at Dawn";
desc_text[2] = "Dawn";
desc_text[3] = "The Miner";
desc_text[4] = "Pit Yard";
desc_text[5] = "The Pugmill";
desc_text[6] = "Pigeon Crees";
desc_text[7] = "The Bar - Playing Dominoes";
desc_text[8] = "The Pony Putter";
desc_text[9] = "Progging the Mat";
desc_text[10] = "Fish and Chips";
desc_text[11] = "Bedside";
desc_text[12] = "Re-setting Arch Girders";
desc_text[13] = "In the Canteen";
desc_text[14] = "The Bowler";
desc_text[15] = "Pit Incident";
desc_text[16] = "Ashington Colliery";
desc_text[17] = "The Besom Maker";


function pick_image (n)
{
  var sampleNum = rand(n)-1;
/*  document.getElementById("random-tall").src = "images/strips/" + random_tall[sampleNum];  */
  document.getElementById("wrap").style.background = "#FFFFFF url(images/strips/" + random_tall[sampleNum] + ") repeat-y";
  document.getElementById("random-small").src = "images/thumbs/" + random_small[sampleNum];
  document.getElementById("picArtist").firstChild.nodeValue = artist_text[sampleNum];
  document.getElementById("picDesc").firstChild.nodeValue = desc_text[sampleNum];
}