function getonme() {
el = event.srcElement ;
if (el.getAttribute("litUp1") != null) {
el.className = "onme1" ;
}
if (el.getAttribute("litUp2") != null) {
el.className = "onme2" ;
}
if (el.getAttribute("litUp3") != null) {
el.className = "onme3" ;
}
}

function getoffme() {
el = event.srcElement ;
if (el.getAttribute("litUp1") != null) {
el.className = "offme1";
}
if (el.getAttribute("litUp2") != null) {
el.className = "offme2";
}
if (el.getAttribute("litUp3") != null) {
el.className = "offme3";
}
}

document.onmouseover = getonme ;
document.onmouseout = getoffme ;