function pre_load(){
      preload_image_00 = new Image()
      preload_image_00.src = "images/events.jpg"
      preload_image_01 = new Image()
      preload_image_01.src = "images/jrfair.jpg"
      preload_image_02 = new Image()
      preload_image_02.src = "images/parade.jpg"
      preload_image_03 = new Image()
      preload_image_03.src = "images/tickets.jpg"
		initialize();
    }

    var numpics = 8;

    function initialize() {
      imageSource=new Array(numpics);
      for(var i=0;i<numpics;++i) imageSource[i]=new Image()
      imageSource[0].src="images/events.jpg"
      imageSource[0].name="events"
      imageSource[1].src="images/events_cl.jpg"
      imageSource[1].name="events"
      imageSource[2].src="images/parade.jpg"
      imageSource[2].name="parade"
      imageSource[3].src="images/parade_cl.jpg"
      imageSource[3].name="parade"
      imageSource[4].src="images/jrfair.jpg"
      imageSource[4].name="jrfair"
      imageSource[5].src="images/jrfair_cl.jpg"
      imageSource[5].name="jrfair"
      imageSource[6].src="images/tickets.jpg"
      imageSource[6].name="tickets"
      imageSource[7].src="images/tickets_cl.jpg"
      imageSource[7].name="tickets"

    }

    function SwapOut(num,namex) {
    namex.src = imageSource[num].src;
    }
    function SwapBack(num,namex) {
    namex.src = imageSource[num+1].src;
    }