02_RSS: replaced refresh method by javascript DOM gymnastics

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@8940 2b470e98-0d58-463d-a4d8-8e2adae1ed80

fhem/www/pgm2/RSS.js

@@ -0,0 +1,9 @@
+// reload image with id 
+function reloadImage(id) {
+    // we use a dummy query to trick the browser into reloading the image
+    var d = new Date();
+    var q = '?t=' + d.getTime();
+    var image = document.getElementById(id);
+    var url = image.getAttribute('src');
+    image.setAttribute('src', url.replace(/\?.*/,'') + q );
+}