There is client requirement is to put a watermark on the dashboards page. this can be done below methods,
Steps to implement,
var obj = document.getElementById('DashboardPageContentDiv');
obj.style.background = "url('http://www.nwarwick.co.uk/Office2003/images/AccessReportWatermarks1.gif') white center no-repeat fixed"
2) you need to add above js to your dashboard water mark required page by using dashboard object as "Text Properties" just add it look like below screen,
3) save it and then test it out, it will looks like below screen,
Alternatively you can assign skins/styles using init blocks, you could create the 'watermark' using css and assign a particular style/skin based on a value in a control table.