function change(id, newClass) {
identity=document.getElementById(id);
identity.className=newClass;
}

//Will Pre-cache an image
function preCache(image){
    if (document.images){
	pic = new Image();
	pic.src = image;
    }
}

//Rollover On
function rollOn(imgName){
  if(document.images){
    document.images[imgName].src = "images/" + imgName + "_on.jpg";
  }
}

//Rollover Off
function rollOff(imgName){
  if (document.images){
    document.images[imgName].src = "images/" + imgName + "_off.jpg";
  }
}