adCount = 2;
var1 = Math.random(); 
// document.write("var1=" + var1 + "<P>"); 
indexNum = (var1 * adCount) + 1;
// document.write("indexNum=" + indexNum + "<P>"); 
indexNum = Math.floor(indexNum);
// document.write("indexNum=" + indexNum + "<P>"); 

className = "" 

 if(indexNum==1) {
  imageName = "DocMember.jpg"
  }
 if(indexNum==2) {
  imageName = "DocMemberFemale.jpg"
  }

document.getElementById("joinImage").src = siteUrl + "/images/" + imageName;