var _gaq = _gaq || [ ] ; _gaq . push ( [ '_setAccount' , 'UA-877593-4' ] ) ; _gaq . push ( [ '_trackPageview' ] ) ; ( function ( ) { let ga = document . createElement ( 'script' ) ; ga . type = 'text/javascript' ; ga . async = true ; ga . src = 'https://ssl.google-analytics.com/ga.js' ; var s = document . getElementsByTagName ( 'script' ) [ 0 ] ; s . parentNode . insertBefore ( ga , s ) ; } ) ( ) ; class Analytics { public static trackEvent ( key , value ) { _gaq . push ( [ '_trackEvent' , key , value ] ) ; } }