Username HTML Markup

[staffurdu]

Username HTML Markup
(Specify an opening and closing HTML tag with which to display the names of users in this group. This applies to names that appear on Logged-in Users, Who's Online, Users Browsing Forum, Users Browsing Thread, Posts, Member List etc.)
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Hello there,

I am trying to add following as my Username HTML Markup:

<img src="fr/admin.gif" style="border: 0pt none;"> <span style="color: #FF0000; background-image: url('bg/admin.gif')"><b>

After entering it when I save usergroup settings, it becomes

<img src="fr/admin.gif" style="border: 0pt none;"> <span style="color: #FF0000; background-image: ur

Is there a limit for characters in this usergroup field? If yes then how can I increase this limit?

Regards.