//preload
(function($) {
  var cache = [];
  // Arguments are image paths relative to the current page.
  $.preLoadImages = function() {
    var args_len = arguments.length;
    for (var i = args_len; i--;) {
      var cacheImage = document.createElement('img');
      cacheImage.src = arguments[i];
      cache.push(cacheImage);
    }
  }
})(jQuery)

var numPanels;
var currentSlide = 0;

$(document).ready(function(){
	// target="_blank"
	$("a[rel='nofollow'], a[rel='external']").click( function() {
		window.open(this.href);
		return false;
	});

	initSlideshow();

	if ($("#sponsors a").size() > 1)
	{
		setInterval(function() {
			goToSlide(currentSlide);
		}, 5600);
	}
	
	//preload images
	//jQuery.preLoadImages("/img/datepicker/datepicker_b.png", "/img/datepicker/datepicker_bl.png","/img/datepicker/datepicker_br.png","/img/datepicker/datepicker_l.png","/img/datepicker/datepicker_r.png","/img/datepicker/datepicker_t.png","/img/datepicker/datepicker_tl.png","/img/datepicker/datepicker_tr.png");
});
	
function initSlideshow() {
	numPanels = $("#sponsors a").size();
	$("#sponsors a").hide();
	$("#sponsors a").slice(currentSlide, currentSlide + 1).show();
	
	currentSlide = 1;
}

function goToSlide(panel) {
	$("#sponsors a:visible").fadeOut(2500);
	$("#sponsors a").slice(currentSlide, currentSlide + 1).fadeIn(2500);
	if (currentSlide == (numPanels - 1))
		currentSlide = 0;
	else
		currentSlide++;
}