var currentImageIndex = 0;

function switchImage() {
  $('#main-image-area').css({ background: "url('" + mainImages[currentImageIndex] + "')" });
  currentImageIndex = (currentImageIndex + 1) % mainImages.length;
  setTimeout( 'switchImage()', 8000 );
}

$(document).ready(function(){
        $("#currsel-popup").tooltip({ effect: 'slide'});

  if ( typeof(mainImages) != 'undefined' && mainImages.length > 0 ) {
    setTimeout( 'switchImage()', 8000 );
  }

});