images=new Array();
images[0]=new Image();
images[0].src='images/imagepool/aurora.jpg';
images[1]=new Image();
images[1].src='images/imagepool/bach.jpg';
images[2]=new Image();
images[2].src='images/imagepool/bayadere.jpg';
images[3]=new Image();
images[3].src='images/imagepool/brahms.jpg';
images[4]=new Image();
images[4].src='images/imagepool/chicago.jpg';
images[5]=new Image();
images[5].src='images/imagepool/choreographic.jpg';
images[6]=new Image();
images[6].src='images/imagepool/copellia.jpg';
images[7]=new Image();
images[7].src='images/imagepool/country.jpg';
images[8]=new Image();
images[8].src='images/imagepool/crucible.jpg';
images[9]=new Image();
images[9].src='images/imagepool/dancing.jpg';
images[10]=new Image();
images[10].src='images/imagepool/dream.jpg';
images[11]=new Image();
images[11].src='images/imagepool/edge.jpg';
images[12]=new Image();
images[12].src='images/imagepool/equus.jpg';
images[13]=new Image();
images[13].src='images/imagepool/extremities.jpg';
images[14]=new Image();
images[14].src='images/imagepool/fokine.jpg';
images[15]=new Image();
images[15].src='images/imagepool/free.jpg';
images[16]=new Image();
images[16].src='images/imagepool/icarus.jpg';
images[17]=new Image();
images[17].src='images/imagepool/measure.jpg';
images[18]=new Image();
images[18].src='images/imagepool/ocg.jpg';
images[19]=new Image();
images[19].src='images/imagepool/paquita.jpg';
images[20]=new Image();
images[20].src='images/imagepool/picnic.jpg';
images[21]=new Image();
images[21].src='images/imagepool/rimers.jpg';
images[22]=new Image();
images[22].src='images/imagepool/swan.jpg';
images[23]=new Image();
images[23].src='images/imagepool/transport.jpg';
images[24]=new Image();
images[24].src='images/imagepool/tuesday.jpg';
images[25]=new Image();
images[25].src='images/imagepool/vagina.jpg';

randomImage=function() {
  imageNum=parseInt(Math.random()*images.length);
  document.getElementById('random').src=images[imageNum].src;
}
window.onload=randomImage;

/* Simply give the <img> element you want to be random the an id of random.

e.g.: <img id="random" src="image.jpg" alt="A photo" />

*/