// JavaScript Document

image1 = new Image();
image1.src = "../img/bt_home_on.gif";
image2 = new Image();
image2.src = "../img/bt_healthcare_on.gif";
image3 = new Image();
image3.src = "../img/bt_patiens_families_on.gif";
image4 = new Image();
image4.src = "../img/bt_practical_info_on.gif";

function swap(what) {
  if (what.src.indexOf("_on")==-1) {
    var onStatus = "";
    var regex = /_off/g;
    onStatus = what.src.replace(regex,"_on");
  } else {
    var onStatus = "";
    var regex = /_on/g;
    onStatus = what.src.replace(regex,"_off");
  }
  what.src = onStatus;
}