function writeHeader(id) {
document.getElementById(id).innerHTML = "";
}
function writeSmBus(id) {
document.getElementById(id).innerHTML = "";
}
function writeMedBus(id) {
document.getElementById(id).innerHTML = "";
}
function writeLargeBus(id) {
document.getElementById(id).innerHTML = "";
}
function writeMediaBus(id) {
document.getElementById(id).innerHTML = "";
}