var sURL=external.get_tab(0, external.cur_sel).document.URL; var sSite=sURL.replace(/[^\/]*\/\//,'').replace(/\/.*/,''); for(var i=external.tab_count-1; i>=0; i--){ try{ var sTabURL=external.get_tab(0, i).document.URL; if(sTabURL.indexOf('http')==0){ var sTabSite=sTabURL.replace(/[^\/]*\/\//,'').replace(/\/.*/,''); if(sTabSite!=sSite) external.close_tab(0, i); } } catch(e){} }