var currentMemberIndex=0;

function printNextMembersBadge() {
      
      currentMemberIndex++;
         
      if (currentMemberIndex >= members.length) {
         currentMemberIndex = 0;
      }
      
      printMembersBadge(currentMemberIndex);
 }

function printPreviousMembersBadge() {
   
      currentMemberIndex--;
         
      if (currentMemberIndex < 0) {
         currentMemberIndex = members.length - 1;
      }
      
      printMembersBadge(currentMemberIndex);
 }
 
 function printMembersBadge(memberIndex) {
   
      writeToDiv("nameDiv", members[memberIndex].name);
      writeToDiv("locationDiv", members[memberIndex].location);
      writeToDiv("specialtyDiv", members[memberIndex].specialty);
      
      if (members[memberIndex].pictureUrl == "") {
         members[memberIndex].pictureUrl = "undercover.jpg";
      }
      
      writeToDiv("pictureDiv", "<img src='/v2/images/member_pictures/" + members[memberIndex].pictureUrl + "' height='100' width='100'/>");
      
      if (members[memberIndex].country != "") {
         writeToDiv("flagDiv", "<img src='/v2/images/flags/" + members[memberIndex].country + ".jpg'/>");
      }
      else {
         writeToDiv("flagDiv", "&nbsp;");
      }
 }


function preloadMemberImages() {
   
   for (var i=0; i < members.length; i++){
   
      if (members[i].pictureUrl == "") {
         members[i].pictureUrl = "undercover.jpg";
      }
      
      var preloadedMemberImage = new Image(100,100); 
      preloadedMemberImage.src = "/v2/images/member_pictures/" + members[i].pictureUrl;
   
      if (members[i].country != "") {
         var preloadedFlagImage = new Image(); 
         preloadedFlagImage.src = "/v2/images/flags/" + members[i].country + ".jpg";
      }
   }
}