var id;
var lName = '';

function ala(idName){
id = document.getElementById(idName);
if (document.getElementById(lName) != null
	&& document.getElementById(lName) != id){
        document.getElementById(lName).style.display='none';
}
id.style.display='block';
if (lName != '') {
id = document.getElementById(lName+'_td');
id.style.borderBottom = '1px solid navy';
}
id = document.getElementById(idName+'_td');
id.style.borderBottom = '0px';
lName = idName;
}