JQuery Count Down Timer

function counter(time,url){
	var interval = setInterval(function(){
		$('#counter').text(time);
		time = time -1;
		
		if(time == 0){
			clearInterval(interval );
			window.location = url;
		}
	}, 1000);
}

$(document).ready(function(){
	counter(10, 'http://google.com.hk');
});