function loadWatermark()
{
	var folder = "/images/watermarks/";
	var watermarks = new Array ();
	watermarks[0] = "lightbulbs.jpg";
	watermarks[1] = "linemen1.jpg";
	watermarks[2] = "linemen2.jpg";
	watermarks[3] = "linemen3.jpg";
	watermarks[4] = "powerlines1.jpg";
	watermarks[5] = "powerlines2.jpg";
	watermarks[6] = "powerlines3.jpg";
	watermarks[7] = "powerlines4.jpg";
	watermarks[8] = "substation.jpg";
	watermarks[9] = "windmill.jpg";
	var i = Math.floor(Math.random() * watermarks.length);
	document.getElementById("contentCell").style.backgroundImage="url("+folder+watermarks[i]+")";
}