var img_maxCount = 5;
var transitionSpeed = 300; //Speed the images slide (in milliseconds)
var imgFormat = 'jpg';
var interval = 3000;
var img_curr = 1;

$(document).ready(function() {
  beginSlideShow();
});

function beginSlideShow() {
  setTimeout('changeToSlide(img_curr)',interval);
}
function changeToSlide(slideNo,newSet) {
  if(slideNo > img_maxCount)
  {slideNo=1;}
  var transTime;
  //figure out transition speed
  if (newSet)
  { transTime = 0; }
  else
  { transTime = transitionSpeed; }
  
  //show slide first...
  $('#imgctr' + slideNo).animate({width: 'show'}, transTime);
  //then hide the others...    
  var i;
  for(i=1;i<=img_maxCount;i++) {
    if (slideNo != i) {
      $('#imgctr' + i).animate({width: 'hide'}, transTime);
    }
  }
  img_curr = slideNo+1;
  setTimeout('changeToSlide(img_curr)',interval);
}