/* Basic display use:
 *	<li><a href="#2006" onClick="return showTab('2006','box-right',this);">Year 2006</a></li>
 *
 *	showTab( ELEMENT_ID, ELEMENT_CONTAINER, ELEMENT )
 *
 */     
var lastTab;
function showtab(eid,target,caller) {
	var t = ge(target);
	var d = t.getElementsByTagName('div');

	for (var i=0;i<d.length;i++) {
		if (is_class(d[i],'tab-content'))
		{
			if ((d[i].id != eid))
				d[i].style.display = 'none';
			else
				d[i].style.display = 'block';
		}
	}

	if (lastTab) lastTab.className = '';

	caller.className = 'selected';
	lastTab = caller;

	return false;
}