function entrar(src,color_entrada) 
{
  src.bgColor=color_entrada;
  src.style.cursor="hand";
}

function salir(src,color_default)
{
  src.bgColor=color_default;
  src.style.cursor="default";
}

function changeto(highlightcolor)
{
  source=event.srcElement
  if (source.tagName=="TR"||source.tagName=="TABLE") return
  while(source.tagName!="TD")
    source=source.parentElement
  if (source.style.backgroundColor!=highlightcolor&&source.id!="ignore")
    source.style.backgroundColor=highlightcolor
}

function changeback(originalcolor)
{
  if (event.fromElement.contains(event.toElement)||source.contains(event.toElement)||source.id=="ignore")
    return
  if (event.toElement!=source)
    source.style.backgroundColor=originalcolor
}