if (document.images) {
nav1 = new Image();nav1.src = 'images/nav_bio.gif';
nav1a = new Image();nav1a.src = 'images/nav_bio_over.gif';
nav2 = new Image();nav2.src = 'images/nav_books.gif';
nav2a = new Image();nav2a.src = 'images/nav_books_over.gif';
nav3 = new Image();nav3.src = 'images/nav_news.gif';
nav3a = new Image();nav3a.src = 'images/nav_news_over.gif';
nav4 = new Image();nav4.src = 'images/nav_killer.gif';
nav4a = new Image();nav4a.src = 'images/nav_killer_over.gif';
nav5 = new Image();nav5.src = 'images/nav_contact.gif';
nav5a = new Image();nav5a.src = 'images/nav_contact_over.gif';
nav6 = new Image();nav6.src = 'images/home_bio.jpg';
nav6a = new Image();nav6a.src = 'images/home_bio_over.jpg';
nav7 = new Image();nav7.src = 'images/home_books.jpg';
nav7a = new Image();nav7a.src = 'images/home_books_over.jpg';
nav8 = new Image();nav8.src = 'images/home_blog.jpg';
nav8a = new Image();nav8a.src = 'images/home_blog_over.jpg';
nav9 = new Image();nav9.src = 'images/home_killer.jpg';
nav9a = new Image();nav9a.src = 'images/home_killer_over.jpg';
nav10 = new Image();nav10.src = 'images/home_contact.jpg';
nav10a = new Image();nav10a.src = 'images/home_contact_over.jpg';

}
function di(id,name){
  if (document.images) {document.images[id].src=eval(name+".src"); }
}

// function that displays status bar message

function dm(msgStr) {
  document.returnValue = false;
  if (document.images) { 
     window.status = msgStr;
     document.returnValue = true;
  }
}
var showMsg = navigator.userAgent != "Mozilla/4.0 (compatible; MSIE 4.0; Mac_PowerPC)";
function dmim(msgStr) {
  document.returnValue = false;
  if (showMsg) { 
    window.status = msgStr;
    document.returnValue = true;
  }
}