function switchTabs(whichTab){
    if (whichTab==2) {
        document.getElementById('tab1Content').style.display="none";
        document.getElementById('tab2Content').style.display="block";
        document.getElementById('tab1').className="tab";
        document.getElementById('tab2').className="tabSelected";
    }
    else {
        document.getElementById('tab1Content').style.display="block";
        document.getElementById('tab2Content').style.display="none";
        document.getElementById('tab1').className="tabSelected";
        document.getElementById('tab2').className="tab";
    }
}