function hideall(){

document.getElementById("tr1").style.display="none";
document.getElementById("tr2").style.display="none";
document.getElementById("tr3").style.display="none";
}

function watchSubmenuDiv()
{
hideall();
document.getElementById('tr1').style.display='block';
document.getElementById('tr2').style.display='block';
document.getElementById('tr3').style.display='block';

}
function BoatSubmenuDiv()
{
hideall();
document.getElementById('tr11').style.display='block';


}