window.addEvent('domready', function(){
		//First Example
		var el = $('nav-building'),
		color = el.getStyle('backgroundColor');

		// We are setting the opacity of the element to 0.5 and adding two events
		$('myElement').set('opacity', 0.5).addEvents({
			mouseenter: function(){
			// This morphes the opacity and backgroundColor
			this.morph({
				'opacity': 1,
				'background-color': '#c6d880'
			});
		},
		mouseleave: function(){
			// Morphes back to the original style
			this.morph({
				opacity: 0.5,
				backgroundColor: color
			});
		}
});