var initTooltip = function () {
    window.addEvent('domready', function ( ) {
            var tips = [];
            $$('a').each( function(el) {
                    var rel = el.getProperty('rel')
			if ($chk(rel)) { if ( rel.contains('tip',' ') ) { tips.include(el); } }
		});
            
            $$('.tipable').each( function(el) { tips.include(el); });
            
            var fx = 1;

            if ($chk(tips)) {
                var toolTip = new Tips(tips, {
                        initialize: function() {
                            fx = new Fx.Tween(this.toolTip, 'opacity', {duration: 500, wait: false}).start(0);
                            // emarsden2008-12-22 for mootools 1.2.1 transition
                            // this.fx = new Fx.Style(this.toolTip, 'opacity', {duration: 500, wait: false}).set(0);
                        },
                        onShow: function(toolTip) { fx.start(1); },
                        onHide: function(toolTip) { fx.start(0); }
                    });
            }
        });
};