function hideElementsByClass( searchClass, node, tag ) {
        var classElements = new Array();
        if ( node == null )
                node = document;
        if ( tag == null )
                tag = '*';
        var els = node.getElementsByTagName(tag);
        for (i = 0, j = 0; i < els.length; i++) {
                if ( els[i].className == searchClass ) {
		    els[i].style.display = 'none';
                }
        }
}