var last_expanded = '';

function showHide(id)

{

var obj = document.getElementById(id);

var status = obj.className;

if (status == 'hide') {

if (last_expanded != '') {

var last_obj = document.getElementById(last_expanded);

last_obj.className = 'hide';

}

obj.className = 'show';

last_expanded = id;

} else {

obj.className = 'hide';

}

}