function $( id ) {
	return document.getElementById( id );
}

function getElementsByClassName( parentElementId, strClassName ) {
	var candidates = $( parentElementId ).getElementsByTagName( "*" );
	var rtn = [];
	for( var i in candidates ) {
		if( candidates[i].className == strClassName )
rtn.push( candidates[i] );
	}
	return rtn;
}