Change user chosen style to default - temporarily

[EuroBeat2]

My board offer several styles to choose from (thank you to all coders who made them available to public). However, for the Christmas time I would like to "force" all visitor to use Christmas theme as default. How can I do it? If I select that style as default and disable option to chose other style, visitors are presented with the styler they originally have chosen without option to change the style? Is there any temporary script I can use ?

Thank you all in advance.

EB

[Seven Skins]

In Style & Language Settings ... select the Default Style ... and set Allow Users To Change Styles to no.

Then make a notice asking them to click on the style link ... e.g. www.site.com/index.php?styleid=10 once they click this link they are stuck with the new style.

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