function load_boxes()
{	
	var first_opacity = new Fx.Style('prr_first', 'opacity', {duration:150});
	var second_opacity = new Fx.Style('prr_second', 'opacity', {duration:150});
	var first_opacity2 = new Fx.Style('npo_first', 'opacity', {duration:150});
	var second_opacity2 = new Fx.Style('npo_second', 'opacity', {duration:150});
	var first_opacity3 = new Fx.Style('dpc_first', 'opacity', {duration:150});
	var second_opacity3 = new Fx.Style('dpc_second', 'opacity', {duration:150});
	
	$('prr').addEvent('mouseenter', function(){		
		first_opacity.stop();
		second_opacity.stop();
		first_opacity.start(0,1);
		second_opacity.start(1,0);		
		
	});	
	$('prr').addEvent('mouseleave', function(){		
		first_opacity.stop();
		second_opacity.stop();
		first_opacity.start(1,0);		
		second_opacity.start(0,1);
	});
	
	$('npo').addEvent('mouseenter', function(){		
		first_opacity2.stop();
		second_opacity2.stop();
		first_opacity2.start(0,1);
		second_opacity2.start(1,0);		
		
	});	
	$('npo').addEvent('mouseleave', function(){		
		first_opacity2.stop();
		second_opacity2.stop();
		first_opacity2.start(1,0);
		second_opacity2.start(0,1);
	});
	
	$('dpc').addEvent('mouseenter', function(){		
		first_opacity3.stop();
		second_opacity3.stop();
		first_opacity3.start(0,1);
		second_opacity3.start(1,0);		
		
	});	
	$('dpc').addEvent('mouseleave', function(){		
		first_opacity3.stop();
		second_opacity3.stop();
		first_opacity3.start(1,0);
		second_opacity3.start(0,1);
	});
}