function bbcode(n) {
	switch(n) {
		case 1:
			var code = "[b][/b]";
			break;
		case 2:
			var code = "[i][/i]";
			break; 
		case 3:
			var code = "[u][/u]";
			break;
		case 4:
			var code = "[align=center][/align]";
			break;
		case 5:
			var code = "[url=][/url]";
			break;
		case 6:
			var code = "[mail=][/mail]";
			break;
		case 7:
			var code = "[img][/img]";
			break;
		case 8:
			var code = "[quote][/quote]";
			break;
		case 9:
			var code = "[code][/code]";
			break;
		case 10:
			var code = "[youtube][/youtube]";
			break;
	}
	var tbox = document.getElementById('a_tbox');
	if (tbox) {
		tbox.value += code;
	}
}