diff --git a/engine/lib/IFCookie.class.php b/engine/lib/IFCookie.class.php
deleted file mode 100644
index 1acc05c..0000000
--- a/engine/lib/IFCookie.class.php
+++ /dev/null
@@ -1,19 +0,0 @@
-<?php
-class IFCookie{
-	const	SESSIONSTR = 'SID';
-	public static function isNeedFix(){
-		$agent = $_SERVER['HTTP_USER_AGENT'];
-		if( strpos($agent,"iPhone") || strpos($agent,"Safari")  ){
-			return true;
-		}
-		return false;
-	}
-	public static function fix(){
-		$pre = $_REQUEST[Url::SHORT_CLASS_TAG] == 'callback'?'state':self::SESSIONSTR;
-		if( isset( $_REQUEST[$pre] ) && $_REQUEST[$pre] && self::isNeedFix() ){
-			$sid = $_REQUEST[$pre];
-			session_id( $sid );
-			Url::$custom[self::SESSIONSTR] = $sid;
-		}
-	}
-}
\ No newline at end of file