var photo;
var photos = new Array;
photos["foto"] = new Image(300,225);
photos["foto"].src = "img/foto.jpg";
photos["2cornot2c"] = new Image(156,225);
photos["2cornot2c"].src = "img/2cornot2c.jpg";
var idLink = new Array ("foto","2cornot2c");

window.onload = init;

function switchPhoto(){
  photo.width = photos[this.id].width;
  photo.height = photos[this.id].height;
  photo.src = photos[this.id].src;
}


function init() {
  photo=document.getElementById("photo");
  for (i=0;i<idLink.length;i++) {
    document.getElementById(idLink[i]).onmouseover= switchPhoto;
  }

}