if(typeof straitCMSaddEvent == 'undefined') {
	var straitCMSaddEvent = function(obj, type, fn) {
		if (obj.addEventListener) {
			obj.addEventListener(type, fn, false);
		} else if (obj.attachEvent) {
			obj["e"+type+fn] = fn;
			obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
			obj.attachEvent( "on"+type, obj[type+fn] );
		}
	};
}
if(typeof straitCMSremoveEvent == 'undefined') {
	var straitCMSremoveEvent = function(obj, type, fn) {
		if (obj.removeEventListener) {
			obj.removeEventListener(type, fn, false);
		}
		else if (obj.detachEvent) {
			obj.detachEvent("on"+type, obj[type+fn]);
			obj[type+fn] = null;
			obj["e"+type+fn] = null;
		}
	}
}