// JavaScript Document

function changeCSSClass( objectId, newClassName ) {

	var identity = document.getElementById( objectId );

	if ( identity != null) {

		if ( new String( identity.className ).toLowerCase() != new String( newClassName ).toLowerCase() ) {

			identity.className = newClassName;

		}

	} else {

		window.alert("The object \'" + objectId + "\' does not exists in this document.");

	}

}