add: if (gURLBar.value == "" || gURLBar.value == null) return;  
context: function URLBarEntered(){  try  {    var url = gURLBar.value;        var fixedUpURI = gURIFixup.createFixupURI(url, 2 /*fixup url*/ );    gGlobalHistory.markPageAsTyped(fixedUpURI);        gURLBar.value = fixedUpURI.spec;        loadURI(fixedUpURI.spec);        content.focus();  }  catch(ex) {alert(ex);}  return true;}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/9385fb64728da2465fc11207e96a307e47f67486/minimo.js/clean/minimo/chrome/content/minimo.js