Sunrise and sunset times

Hi, I am currently about to use Javascript code to show a website viewer one of two pages depending on whether it is daytime or nightime (This is simply to switch between a day webcam and a nightvision one)

I can do this using the time of day (As per the code below) but this isn't a great solution for a number of reasons. What I really want to do is use the values of 'Sunrise' and 'Sunset' generated from either your excellent module, or an external site such as Weather.com.

My question is do you know if it is possible to use this data from your module within my javascript please?

(I know this is probably an unusual request!)

Many thanks

Adrian

<script language="javascript">
<!-- 
var now = new Date();
var hour = now.getHours();
if (hour < 8)  {document.write('before 8am - show night cam');}
if (hour >= 8)  {document.write('between 8am-9pm - show day cam');}
if (hour >= 21)  {document.write('after 9pm - show night cam');}
// -->
</script>