if (document.images) {
  var why_off = new Image();
  var why_on = new Image();

  var patented_off = new Image();
  var patented_on = new Image();

  var resistance_off = new Image();
  var resistance_on = new Image();
 
  var seminar_off = new Image();
  var seminar_on = new Image();

  var faq_off = new Image();
  var faq_on = new Image();

  var arrow_logo_off = new Image();
  var arrow_logo_on = new Image();

  var links_off = new Image();
  var links_on = new Image();
	
  var map1 = new Image();
  var map2 = new Image();
  var map3 = new Image();
  var map4 = new Image();
  var line_1_on= new Image();
  var line_2_on= new Image();
  var line_3_on= new Image();
  var line_4_on= new Image();
}

function loadImages() {
  if (document.images) {
  why_off.src = "images/buttons3/why_off.gif";
  why_on.src = "images/buttons3/why_on.gif";

  patented_off.src = "images/buttons3/patented_off.gif";
  patented_on.src = "images/buttons3/patented_on.gif";

  resistance_off.src = "images/buttons3/resistance_off.gif";
  resistance_on.src = "images/buttons3/resistance_on.gif";

  seminar_off.src = "images/buttons3/seminar_off.gif";
  seminar_on.src = "images/buttons3/seminar_on.gif";

  faq_off.src = "images/buttons3/faq_off.gif";
  faq_on.src = "images/buttons3/faq_on.gif";

  arrow_logo_off.src = "images/buttons3/arrow_logo_off.gif";
  arrow_logo_on.src = "images/buttons3/arrow_logo_on.gif";

  links_off.src = "images/buttons3/links_off.gif";
  links_on.src = "images/buttons3/links_on.gif";

  map1.src = "images/map/map1.jpg";
  map2.src = "images/map/map2.jpg"; 
  map3.src = "images/map/map3.jpg";
  map4.src = "images/map/map4.jpg";
  line_1_on.src= "images/map/line_1_on.gif";
  line_2_on.src= "images/map/line_2_on.gif";
  line_3_on.src= "images/map/line_3_on.gif";
  line_4_on.src= "images/map/line_4_on.gif";
  } 
}

function activate(imgName) {
  if (document.images) {
    if ( eval( imgName + "_on.complete") ) {
      document.images[imgName].src = eval(imgName +
"_on.src");
    }
  }
}
 
function deactivate(imgName) {
  if (document.images) {
    if ( eval(imgName + "_off.complete") ) {
      document.images[imgName].src = eval(imgName +
"_off.src");
    }
  }
}

function activate_map(imgName) {
  if (document.images) {
	if ( eval("line_"+ imgName + "_on.complete") ) {
      document.images["z_click"].src = eval("line_"+ imgName + "_on.src");
    }

    if ( eval("map"+ imgName + ".complete") ) {
      document.images["maplocation"].src = eval("map"+ imgName + ".src");
    }
	
  }
}