~~~ function getjsversion(){ var n = navigator; var u = n.userAgent; var apn = n.appName; var v = n.appVersion; var ie = v.indexOf('MSIE '); if (ie > 0){ apv = parseInt(i = v.substring(ie + 5)); if (apv > 3) { apv = parseFloat(i); } } else { apv = parseFloat(v); } var isie = (apn == 'Microsoft Internet Explorer'); var ismac = (u.indexOf('Mac') >= 0); var javascriptVersion = "1.0"; if (String && String.prototype) { javascriptVersion = '1.1'; if (javascriptVersion.match) { javascriptVersion = '1.2'; var tm = new Date; if (tm.setUTCDate) { javascriptVersion = '1.3'; if (isie && ismac && apv >= 5) javascriptVersion = '1.4'; var pn = 0; if (pn.toPrecision) { javascriptVersion = '1.5'; a = new Array; if (a.forEach) { javascriptVersion = '1.6'; i = 0; o = new Object; tcf = new Function('o', 'var e,i=0;try{i=new Iterator(o)}catch(e){}return i'); i = tcf(o); if (i && i.next) { javascriptVersion = '1.7'; } } } } } } return javascriptVersion; } ~~~