rem: feedLocationEl.disabled = true; 
add: feedLocationEl.setAttribute('readonly', true); 
context: function onLoad(){   var feedLocationEl = document.getElementById('feedLocation');  var rssAccountMenuItem = document.getElementById('rssAccountMenuItem');  if (window.arguments[0].feedLocation)    feedLocationEl.value = window.arguments[0].feedLocation;    // root the location picker to the news & blogs server  document.getElementById('selectFolder').setAttribute('ref', window.arguments[0].serverURI);  SetFolderPicker(window.arguments[0].folderURI ? window.arguments[0].folderURI : window.arguments[0].serverURI, 'selectFolder');  document.getElementById('selectFolder').setInitialSelection();  rssAccountMenuItem.label = window.arguments[0].serverPrettyName;  rssAccountMenuItem.value = window.arguments[0].serverURI;  // set quick mode value  document.getElementById('quickMode').checked = window.arguments[0].quickMode;  if (!window.arguments[0].newFeed)  {    // if we are editing an existing feed, disable the top level account    rssAccountMenuItem.setAttribute('disabled', 'true');    feedLocationEl.disabled = true;  }}
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/79d8aa8242579fd5b4f00eda57a41ae27172f959/feed-properties.js/clean/mail/extensions/newsblog/content/feed-properties.js