if (document.images) {

      var homeOn = new Image();
      homeOn.src = "images/home_on.jpg";
      var homeOff = new Image();
      homeOff.src = "images/home_off.jpg ";

	var ecomOn = new Image();
      ecomOn.src = "images/ecom_on.jpg";
      var ecomOff = new Image();
      ecomOff.src = "images/ecom_off.jpg";

	var ocomOn = new Image();
      ocomOn.src = "images/ocom_on.jpg";
      var ocomOff = new Image();
      ocomOff.src = "images/ocom_off.jpg";

	var eresOn = new Image();
      eresOn.src = "images/eres_on.jpg";
      var eresOff = new Image();
      eresOff.src = "images/eres_off.jpg"

	var oresOn = new Image();
      oresOn.src = "images/ores_on.jpg";
      var oresOff = new Image();
      oresOff.src = "images/ores_off.jpg"

	var barsOn = new Image();
      barsOn.src = "images/bars_on.jpg";
      var barsOff = new Image();
      barsOff.src = "images/bars_off.jpg";

	var glassOn = new Image();
      glassOn.src = "images/glass_on.jpg";
      var glassOff = new Image();
      glassOff.src = "images/glass_off.jpg";

	var accessOn = new Image();
      accessOn.src = "images/access_on.jpg";
      var accessOff = new Image();
      accessOff.src = "images/access_off.jpg";

	var locksOn = new Image();
      locksOn.src = "images/locks_on.jpg";
      var locksOff = new Image();
      locksOff.src = "images/locks_off.jpg";

	var clientOn = new Image();
      clientOn.src = "images/client_on.jpg";
      var clientOff = new Image();
      clientOff.src = "images/client_off.jpg";

}

function changeIn(imageName) {
      if (!document.images) return;
      document.images[imageName].src = eval(imageName + "On.src");
}

function changeOut(imageName) {
      if (!document.images) return;
      document.images[imageName].src = eval(imageName + "Off.src");
}