function highlight(what,color){
what.style.background=color

}

function highlight_on(e){
if (document.all)
cell=event.srcElement
else if (document.getElementById)
cell=e.target
if (cell.className=="box"){
highlight(cell,"#f0f0ef")
}
else{
while(cell.tagName!="TABLE"){
cell=document.getElementById? cell.parentNode : cell.parentElement
if (cell.className=="box")
highlight(cell,"#f0f0ef")
}
}
}

function highlight_off(e){
if (document.all)
cell=event.srcElement
else if (document.getElementById)
cell=e.target
if (cell.className=="box")
highlight(cell,"#ffffff")
else{
while(cell.tagName!="TABLE"){
cell=document.getElementById? cell.parentNode : cell.parentElement
if (cell.className=="box")
highlight(cell,"#ffffff")

}
}
}