rem: catch (e) {} 
context: function onselect_loadURI(tree, columnName) {  try {    var row = tree.currentIndex;    var properties = Components.classes["@mozilla.org/supports-array;1"].createInstance(Components.interfaces.nsISupportsArray);    var col = tree.columns[columnName];    tree.view.getCellProperties(row, col, properties);    if (!properties) return;    var uri = getPropertyValue(properties, "link-");    if (uri)      loadURI(uri);  }  catch (e) {}// when switching between tabs a spurious row number is returned.}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/102ed885829b4c31da3aa88ab317ba55de100a15/help.js/buggy/extensions/help/resources/content/help.js