// JavaScript Documentvar arrows0 = "images/arrowR.gif";var arrows1 = "images/arrowD.gif";function handleparent(parentID){    myparent = document.getElementById("menu" + parentID)    if (myparent.style.display=="none") {        myparent.style.display = "block"        document["arrow"+parentID].src = arrows1;    } else {        myparent.style.display = "none"        document["arrow"+parentID].src = arrows0;    }}