var btn_home = new Image();
btn_home.src = "images/btn_home.gif";

var btn_home_hot = new Image();
btn_home_hot.src = "images/btn_home_hot.gif";

var btn_concerts = new Image();
btn_concerts.src = "images/btn_concerts.gif";

var btn_concerts_hot = new Image();
btn_concerts_hot.src = "images/btn_concerts_hot.gif";

var btn_support = new Image();
btn_support.src = "images/btn_support.gif";

var btn_support_hot = new Image();
btn_support_hot.src = "images/btn_support_hot.gif";

var btn_education = new Image();
btn_education.src = "images/btn_education.gif";

var btn_education_hot = new Image();
btn_education_hot.src = "images/btn_education_hot.gif";

var btn_meet = new Image();
btn_meet.src = "images/btn_meet.gif";

var btn_meet_hot = new Image();
btn_meet_hot.src = "images/btn_meet_hot.gif";

var btn_about = new Image();
btn_about.src = "images/btn_about.gif";

var btn_about_hot = new Image();
btn_about_hot.src = "images/btn_about_hot.gif";

var btn_cart = new Image();
btn_cart.src = "images/btn_cart.gif";

var btn_cart_hot = new Image();
btn_cart_hot.src = "images/btn_cart_hot.gif";

var btn_round_subscribe = new Image();
btn_round_subscribe.src = "images/btn_round_subscribe.gif";

var btn_round_subscribe_hot = new Image();
btn_round_subscribe_hot.src = "images/btn_round_subscribe_hot.gif";


var btn_join = new Image();
btn_join.src = "images/btn_join.gif";

var btn_join_hot = new Image();
btn_join_hot.src = "images/btn_join_hot.gif";

var btn_subscribe = new Image();
btn_subscribe.src = "images/btn_subscribe.gif";

var btn_subscribe_hot = new Image();
btn_subscribe_hot.src = "images/btn_subscribe_hot.gif";

var btn_purchase = new Image();
btn_purchase.src = "images/btn_purchase.gif";

var btn_purchase_hot = new Image();
btn_purchase_hot.src = "images/btn_purchase_hot.gif";


var btn_donate = new Image();
btn_donate.src = "images/btn_donate.gif";

var btn_donate_hot = new Image();
btn_donate_hot.src = "images/btn_donate_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");
  }  
}