SharePoint / JavaScript Tip/Theme of the day

Hi experts,

I have been asked to add a theme of the day to our Intranet (SharePoint 2013) homepage.

There will be 31 themes (one for each day in a calendar month) and they will be repeated every month. For example Theme 1 = Working together, so every 1st of of the month, that theme should display
Theme 2 = Recognising special effort, so on the 2nd of every month, that theme should display instead.

To make it simple, I plan to store the themes as images in a library. e.g. 01.png, 02.png and thinking the easiest way would be a simple javascript that does something like... (PS - I don't know JavaScript (well) so forgive the psuedo code below,..)

£path = "http://portal.mycompany.com/sites/IT/themes/" /* base path */
$themeURL = $path & left(now,2) & ".png" /* add the path to today's image based on the day of today's date */
getElementByID("theme_of_the_day").innerHTML="<IMG SRC=""" & themeURL & """>" /* set div to that image URL */

Thanks in advance!
Martin
Martin ZAsked:
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sajayj2009Commented:
<script>
    var d = new Date();
    var n = d.getDate();
    var path = "http://portal.mycompany.com/sites/IT/themes/";
    var currentImg = path+n;
    var themeURL = currentImg + ".png";
    document.getElementById("theme_of_the_day").style.background="url(themeURL) left top no-repeat 100% 100%";
</script>

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It will take image automatically according to date. You need to keep 31 images inside theme folder.
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Martin ZAuthor Commented:
Thanks Jamie!

Using the links you provided I created a minimal JavaScript to load the image (assuming the name matches)...

​​​​<script type="text/javascript">
var img_location = "http://portal.mycompany.com/Assets/DailyThemes/";
var currentdate = new Date();
var day = currentdate.getDate();
document.write('<img src="' + img_location + day + '.png">');
</script>

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