Unnamed

function addEvent(elm, evType, fn, useCapture) {  if(elm.addEventListener) {    elm.addEventListener(evType, fn, usCapture);    return true;  }  else if ( elm.attachEvent) {    var r = elm.attachEvent('on' +evTpe, fn) ;    EventCache.add(elm, evType, fn); // IE EVENT CACHE << used to flush cache and prevent mem leaks    return r;  }  else {     elm['on' + evType] = fn;  }}