function removeFriend(usernumber){
	if(!confirm("このユーザを友達リストから削除しますか？")) return;
    var target_url = '/removeFriend.jspx?friendUsernumber=' + usernumber;
	if(typeof(httpRequest) != 'undefined'){
	    httpRequest(target_url, processRemoveFriendResponse);	
	}else if (typeof(Ajax) !== 'undefined'){
		var myAjax = new Ajax(target_url, 
			{method: 'get',
			 onComplete: function(event) {
				processRemoveFriendResponse(null);
			 }
			});
		myAjax.request();
	}

}

function processRemoveFriendResponse(text_data) {
	top.location.reload(true);
}