Event.observe(window,'load',function(){
	Event.observe('btn_squash','mouseover',function (event){
		$('btn_squash').src="if/btn-squash-over.jpg";
	});
	
	Event.observe('btn_squash','mouseout',function (event){
		$('btn_squash').src="if/btn-squash.jpg";
	});
	Event.observe('btn_volley','mouseover',function (event){
		$('btn_volley').src="if/btn-volley-over.jpg";
	});
	
	Event.observe('btn_volley','mouseout',function (event){
		$('btn_volley').src="if/btn-volley.jpg";
	});
	Event.observe('btn_hand','mouseover',function (event){
		$('btn_hand').src="if/btn-hand-over.jpg";
	});
	
	Event.observe('btn_hand','mouseout',function (event){
		$('btn_hand').src="if/btn-hand.jpg";
	});
	Event.observe('btn_bad','mouseover',function (event){
		$('btn_bad').src="if/btn-bad-over.jpg";
	});
	
	Event.observe('btn_bad','mouseout',function (event){
		$('btn_bad').src="if/btn-bad.jpg";
	});
});