Attaches a user-defined handler to any available event.

Parameters:

• evName - the event name;
• evHandler - a user-defined handler that will be called when event occurs.
  
  

  var myEvent = myCalendar.attachEvent("onClick", function(){
      // event handler code
  })

Returns eventId which then can be used to detach event.

Description:

• several handlers can be attached to one and the same event, and all of them will be executed
• event names are case-insensitive
• if event handler can return value (usualy true or false, used in cancelable events like onBeforeChange) and several handlers are attached - result value will calculated as: value1 && value2 && …valueX

See also:

• detachEvent()