Change a picture at a determined time
<p>I'm looking for a way to change a picture on my website if the time is later than 21pm on a certain day. Basically I don't want to have to do it manually since I won't have access to a computer when I need to switch the image. I cannot use PHP as the website I am working on does not support PHP (only ASP).</p>

<p>I guess it could be done in Javascript.</p>

<p>Edit : the picture need to be changed once at 21 and never be changed again not even the day after.</p>
