function showhide ( id ) {
	
	el = document.getElementById(id)
	
	if (! el ) {
		return;
	}
	
	if( el.style.display == 'none' ) {
		el.style.display = 'block';	
	} else {
		el.style.display = 'none';	
	}
	
	return false; //don't jump on hrefs...
}

function show( id ) {

	el = document.getElementById(id)
	
	if (! el ) {
		return;
	}
	
	el.style.display = 'block';
	
	return false;
}

function hide( id ) {

	el = document.getElementById(id)
	
	if (! el ) {
		return;
	}
	
	el.style.display = 'none';
	
	return false;
}