function pickFlash(){
var flashFile = new Array() // do not change this

flashFile[0] = 'hmantarctica'
flashFile[1] = 'hmcoastal'
flashFile[2] = 'hmforest'
flashFile[3] = 'hmmountains'
flashFile[4] = 'hmoutdoors'
flashFile[5] = 'hmpeople'
flashFile[6] = 'hmrivers'
flashFile[7] = 'hmrural'
flashFile[8] = 'hmwildlife'

var j = 0
var p = flashFile.length;
var preFlash = new Array();
for (i = 0; i < p; i++){
   preFlash[i] = new Image();
   preFlash[i].src = flashFile[i];
}
var whichFlashFile = Math.round(Math.random()*(p-1));
var flashName = flashFile[whichFlashFile];
return flashName;
}