rem: document.getElementById("btnSession").disabled = !aSiteField.value; document.getElementById("btnBlock").disabled = !aSiteField.value; document.getElementById("btnAllow").disabled = !aSiteField.value; 
add:  var site = aSiteField.value.replace(/^\s*([-\w]*:\/+)?/, "");  document.getElementById("btnSession").disabled = !site; document.getElementById("btnBlock").disabled = !site; document.getElementById("btnAllow").disabled = !site; 
context:   onHostInput: function (aSiteField)  {    document.getElementById("btnSession").disabled = !aSiteField.value;    document.getElementById("btnBlock").disabled = !aSiteField.value;    document.getElementById("btnAllow").disabled = !aSiteField.value;  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/ff2097252db3116a9f29a6fa4b4c23b655f2b3c5/CookieExceptions.js/clean/browser/components/cookieviewer/content/CookieExceptions.js