$(function() {
						
		//event handlers for 'What's Happening button
		var img = new Image();
		img.src= 'images/what_happen.png';
		var img_ovr = new Image();
		img_ovr.src = 'images/what_happen_ovr.png';
		
		$('#happening img').mouseover(function(){
		  this.src= img_ovr.src;
		});
		$('#happening img').mouseout(function(){
		  this.src= img.src;
		});
	});