function homas()
{
document.getElementById('homas').className="on";
document.getElementById('poojas').className="off";
document.getElementById('gemstones').className="off";
document.getElementById('tb1').className="tab2";
document.getElementById('tb2').className="tab1";
document.getElementById('tb3').className="tab1";
}


function poojas()
{
document.getElementById('homas').className="off";
document.getElementById('poojas').className="on";
document.getElementById('gemstones').className="off";
document.getElementById('tb1').className="tab1";
document.getElementById('tb2').className="tab2";
document.getElementById('tb3').className="tab1";
}

function gemstones()
{
document.getElementById('homas').className="off";
document.getElementById('poojas').className="off";
document.getElementById('gemstones').className="on";
document.getElementById('tb1').className="tab1";
document.getElementById('tb2').className="tab1";
document.getElementById('tb3').className="tab2";
}