arImages=new Array(
  
  
  "http://www.utmem.edu/molecular_sciences/images/middlerotation/chlamydia1sc.jpg",
  "http://www.utmem.edu/molecular_sciences/images/middlerotation/chlamydia2sc.jpg",
  "http://www.utmem.edu/molecular_sciences/images/middlerotation/chlamydia4sc.jpg",
  
  "http://www.utmem.edu/molecular_sciences/images/middlerotation/JFsc.jpg",
  "http://www.utmem.edu/molecular_sciences/images/middlerotation/Jim-Ft-phagocytosis.gif",
  "http://www.utmem.edu/molecular_sciences/images/middlerotation/chlamydia5sc.jpg",
  "http://www.utmem.edu/molecular_sciences/images/middlerotation/chlamydia6sc.jpg",

  "http://www.utmem.edu/molecular_sciences/images/middlerotation/research_pic1sc.jpg",
  
  "http://www.utmem.edu/molecular_sciences/images/middlerotation/research_pic_2sc.jpg",
  "http://www.utmem.edu/molecular_sciences/images/middlerotation/research_pic_3sc.gif",
  "http://www.utmem.edu/molecular_sciences/images/middlerotation/toxR_regulonsc.jpg",
 
  "http://www.utmem.edu/molecular_sciences/images/middlerotation/whitt.virionscsc.jpg"
 );

rand=Math.floor(arImages.length*Math.random());
document.write('<img src="'+arImages[rand]+'"   alt="Rotating Photos">');