var randomTWD = 0;
var DoIt = 0;
images = new Array;
images[1] = new Image();
images[1].src = "/museum/images/banners/main-1.jpg";
images[2] = new Image();
images[2].src = "/museum/images/banners/rsch-herb-field.jpg";
images[3] = new Image();
images[3].src = "/museum/images/banners/main-education.jpg";
images[4] = new Image();
images[4].src = "/museum/images/banners/main-events.jpg";
images[5] = new Image();
images[5].src = "/museum/images/banners/main-info.jpg";
images[6] = new Image();
images[6].src = "/museum/images/banners/bldg-summer.jpg";
images[7] = new Image();
images[7].src = "/museum/images/banners/rbaag-atchak.jpg";
images[8] = new Image();
images[8].src = "/museum/images/banners/main-children.jpg";
images[9] = new Image();
images[9].src = "/museum/images/banners/rsch-mamm-field.jpg";
images[10] = new Image();
images[10].src = "/museum/images/banners/main-bear.jpg";
images[11] = new Image();
images[11].src = "/museum/images/banners/main-kids.jpg";
images[12] = new Image();
images[12].src = "/museum/images/banners/bldg-twilight.jpg";
images[13] = new Image();
images[13].src = "/museum/images/banners/rbaag-ravenstail.jpg";
images[14] = new Image();
images[14].src = "/museum/images/banners/docent-aurora.jpg";
images[15] = new Image();
images[15].src = "/museum/images/banners/theplace.jpg";
images[16] = new Image();
images[16].src = "/museum/images/banners/docent-insects.jpg";
images[17] = new Image();
images[17].src = "/museum/images/banners/rbaag-nativeart.jpg";
images[18] = new Image();
images[18].src = "/museum/images/banners/rsch-mamm-lab.jpg";
images[19] = new Image();
images[19].src = "/museum/images/banners/gal-ak-fish.jpg";
images[20] = new Image();
images[20].src = "/museum/images/banners/rsch-birds.jpg";
images[21] = new Image();
images[21].src = "/museum/images/banners/rbaag-docent.jpg";
images[22] = new Image();
images[22].src = "/museum/images/banners/outreach-openhouse.jpg";

function TWDpics() {
var imgnum = images.length - 1;
do {
var randnum = Math.random();
randomTWD = Math.round((imgnum - 1) * randnum) + 1;
} while (randomTWD == DoIt);
DoIt = randomTWD;
document.ImageHolder.src = images[DoIt].src;
}