var rotateImages = new Array() 
rotateImages[0] = '<a href=\"http://www.glencoe.com/catalog/index.php/program?c=7&s=414&p=1858\"><img src=\"/sites/common_assets/trade_ind_ed/images/rotator/book_1.jpg\" border=\"0"\></a>'
rotateImages[1] = '<a href=\"http://www.glencoe.com/catalog/index.php/program?c=7&s=414&p=1859\"><img src=\"/sites/common_assets/trade_ind_ed/images/rotator/book_2.jpg\" border=\"0"\></a>'
rotateImages[2] = '<a href=\"http://www.glencoe.com/catalog/index.php/program?c=7&s=417&p=1860\"><img src=\"/sites/common_assets/trade_ind_ed/images/rotator/book_3.jpg\" border=\"0"\></a>'
var j = 0
var t = rotateImages.length;
var preBuffer = new Array()
for (c = 0; c < t; c++){
   preBuffer[c] = new Image()
   preBuffer[c].src = rotateImages[c]
}
var whichImage = Math.round(Math.random()*(t-1));
function showImage(){
document.write(''+rotateImages[whichImage]+'');
}