add: if (gTotalSearchTerms == 1) document.getElementById("less0").setAttribute("disabled", "true"); 
context: function initializeSearchRows(scope, searchTerms){    gTotalSearchTerms = searchTerms.Count();    for (var i=0; i<gTotalSearchTerms; i++) {        var searchTerm = searchTerms.QueryElementAt(i, nsIMsgSearchTerm);        createSearchRow(i, scope, searchTerm);    }    initializeBooleanWidgets();}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/ec0d315a7d8c99043e5e9067bf6715a5f4a69c89/searchTermOverlay.js/clean/mailnews/base/search/resources/content/searchTermOverlay.js