var explosion = null;
var count = 0;
function explosionOcbf(ocbf) {
	explosion = setInterval(
		function()
		{
			count --;
			if(ocbf) $('.light-on').toggleClass('set_on');
			if(count == 12) clearInterval(explosion);
		},
		
		500
	)
}

explosionOcbf(true,false);