var events = {

	   addEvent : function (elm, evType, fn, useCapture){
		  
        if (elm.addEventListener) {
          elm.addEventListener(evType, fn, useCapture); 
          return true; 
        } else if (elm.attachEvent) {
          var r = elm.attachEvent('on' + evType, fn); 
          return r; 
        } else {
          elm['on' + evType] = fn;
        }
		
      }
	  
}