var classes = ["dtr-white", "dtr-white-small", "dtr-silver", "dtr-silver-small", "dtr-white-gradient", "dtr-silver-right", "dtr-home", "dtr-blue"];

function dtr_replace(el, cl) {
		var image_url = '/dtr/'+cl.replace("dtr-", "")+'/?text='+encodeURI(el.getText()).replace("+", "%2b").replace("%E2%80%99", "%27");
		img = new Element("img", {'src':image_url, 'alt':el.getText(), 'class':'dtr-image'});
		el.replaceWith(img);
}

window.addEvent("domready", function () {
				for (var i=0; i<classes.length; i++) {
						var cl = classes[i];
						$$("."+cl).each(function (el) { dtr_replace(el, cl); });
				}
		});