var previousdiv = "index";

function ittab(divid) {
	if (document.getElementById) {
		document.getElementById(previousdiv).style.display="none"
		document.getElementById(divid).style.display="block"
		document.getElementById(divid+'_off').style.display="none"
		document.getElementById(divid+'_on').style.display="block"
		previousdiv=divid
		}
	}
function tabreturn (imgid) {
		if (document.getElementById) {
		document.getElementById(imgid+'_off').style.display="block"
		document.getElementById(imgid+'_on').style.display="none"
}
}

function ald(imgid){
if(document.getElementById){

document.getElementById('aldebaranfeature').style.backgroundImage = "url("+imgid+")";

	}
}