var arrPreload = [];

function init() {
  var arrAnchors = document.getElementsByTagName("a");
  for(i=0;i<arrAnchors.length;i++) {
    arrAnchors[i].onfocus = new Function("if(this.blur)this.blur()");
    if(arrAnchors[i].rel=="rollover") {
      arrAnchors[i].onmouseover = new Function("rollOver(this)");
          arrAnchors[i].onmouseout = new Function("rollOut(this)");
          arrAnchors[i].getElementsByTagName("img");
          arrAnchors[i].imgObj = arrAnchors[i].getElementsByTagName("img")[0];
      arrAnchors[i].origSrc = arrAnchors[i].imgObj.src;
          arrAnchors[i].overSrc = arrAnchors[i].imgObj.src.replace("_off","_on");
          preLoad(arrAnchors[i].overSrc);
        }
  }
}

function preLoad() {
  for(j=0;j<arguments.length;j++) {
    imgTemp = new Image();
    imgTemp.src = arguments[j];
    arrPreload[arrPreload.length] = imgTemp;
  }
}

function rollOver(objTemp) {
  objTemp.imgObj.src = objTemp.overSrc;
}

function rollOut(objTemp) {
  objTemp.imgObj.src = objTemp.origSrc;
}