var btn_search = new Image();
btn_search.src = "http://www.mhkauai.com/images/btn_search.gif";

var btn_search_hot = new Image();
btn_search_hot.src = "http://www.mhkauai.com/images/btn_search_hot.gif";

var btn_featured = new Image();
btn_featured.src = "http://www.mhkauai.com/images/btn_featured.gif";

var btn_featured_hot = new Image();
btn_featured_hot.src = "http://www.mhkauai.com/images/btn_featured_hot.gif";

var btn_getlistings = new Image();
btn_getlistings.src = "http://www.mhkauai.com/images/btn_getlistings.gif";

var btn_getlistings_hot = new Image();
btn_getlistings_hot.src = "http://www.mhkauai.com/images/btn_getlistings_hot.gif";

var btn_contact = new Image();
btn_contact.src = "http://www.mhkauai.com/images/btn_contact.gif";

var btn_contact_hot = new Image();
btn_contact_hot.src = "http://www.mhkauai.com/images/btn_contact_hot.gif";

var btn_about = new Image();
btn_about.src = "http://www.mhkauai.com/images/btn_about.gif";

var btn_about_hot = new Image();
btn_about_hot.src = "http://www.mhkauai.com/images/btn_about_hot.gif";
      

function rollOver(imgName) {  
  if(document.images[imgName]) {
    document[imgName].src = eval(imgName + "_hot.src")
  }  
}

function rollOut(imgName) {  
  if(document.images[imgName]) {
    document[imgName].src = eval(imgName + ".src");
  }  
}