function closem(){
document.getElementById("Overview").style.display='none';
document.getElementById("Features").style.display='none';
document.getElementById("Specification").style.display='none';
document.getElementById("UseCases").style.display='none';
document.getElementById("Downloads").style.display='none';

document.getElementById('OverviewTab').style.borderBottom="1px solid #ccc";
document.getElementById('FeaturesTab').style.borderBottom="1px solid #ccc";
document.getElementById('SpecificationTab').style.borderBottom="1px solid #ccc";
document.getElementById('UseCasesTab').style.borderBottom="1px solid #ccc";
document.getElementById('DownloadsTab').style.borderBottom="1px solid #ccc";

document.getElementById('OverviewTab').style.background='#f9f9f9';
document.getElementById('FeaturesTab').style.background='#f9f9f9';
document.getElementById('SpecificationTab').style.background='#f9f9f9';
document.getElementById('UseCasesTab').style.background='#f9f9f9';
document.getElementById('DownloadsTab').style.background='#f9f9f9';
}

function openit(foo){
closem();
document.getElementById(foo + "Tab").style.borderBottom="1px solid #eee";
document.getElementById(foo + "Tab").style.backgroundColor="#eee";
document.getElementById(foo).style.display="block";
}




function closetab(){
document.getElementById("Panel1").style.display='none';
document.getElementById("Panel2").style.display='none';


document.getElementById('Panel1Tab').style.borderBottom="1px solid #ccc";
document.getElementById('Panel2Tab').style.borderBottom="1px solid #ccc";


document.getElementById('Panel1Tab').style.background='#f9f9f9';
document.getElementById('Panel2Tab').style.background='#f9f9f9';

}

function opentab(foo){
closetab();
document.getElementById(foo + "Tab").style.borderBottom="1px solid #eee";
document.getElementById(foo + "Tab").style.backgroundColor="#eee";
document.getElementById(foo).style.display="block";
}