diff --git a/17_day/bootpack.c b/17_day/bootpack.c
index 78e4a77..f70e58c 100644
--- a/17_day/bootpack.c
+++ b/17_day/bootpack.c
@@ -4,6 +4,7 @@
 #include <stdio.h>
 
 void make_window8(unsigned char *buf, int xsize, int ysize, char *title, char act);
+void make_wtitle8(unsigned char *buf, int xsize, char *title, char act);
 void putfonts8_asc_sht(struct SHEET *sht, int x, int y, int c, int b, char *s, int l);
 void make_textbox8(struct SHEET *sht, int x0, int y0, int sx, int sy, int c);
 void console_task(struct SHEET *sheet);
@@ -31,6 +32,7 @@ void HariMain(void)
 	struct SHEET *sht_back, *sht_mouse, *sht_win, *sht_cons;
 	struct TASK *task_a, *task_cons;
 	struct TIMER *timer;
+	int key_to = 0;
 
 	init_gdtidt();
 	init_pic();
@@ -134,7 +136,20 @@ void HariMain(void)
 					putfonts8_asc_sht(sht_win, cursor_x, 28, COL8_000000, COL8_FFFFFF, " ", 1);
 					cursor_x -= 8;
 				}
-				/* 光标再显示 */
+				if (i == 256 + 0x0f) { /* Tab键*/
+					if (key_to == 0) {
+						key_to = 1;
+						make_wtitle8(buf_win, sht_win->bxsize, "task_a", 0);
+						make_wtitle8(buf_cons, sht_cons->bxsize, "console", 1);
+					} else {
+						key_to = 0;
+						make_wtitle8(buf_win, sht_win->bxsize, "task_a", 1);
+						make_wtitle8(buf_cons, sht_cons->bxsize, "console", 0);
+					}
+					sheet_refresh(sht_win, 0, 0, sht_win->bxsize, 21);
+					sheet_refresh(sht_cons, 0, 0, sht_cons->bxsize, 21);
+				}
+				/*重新显示光标*/
 				boxfill8(sht_win->buf, sht_win->bxsize, cursor_c, cursor_x, 28, cursor_x + 7, 43);
 				sheet_refresh(sht_win, cursor_x, 28, cursor_x + 8, 44);
 			} else if (512 <= i && i <= 767) { /* 鼠标数据*/
@@ -190,6 +205,21 @@ void HariMain(void)
 }
 
 void make_window8(unsigned char *buf, int xsize, int ysize, char *title, char act)
+{
+	boxfill8(buf, xsize, COL8_C6C6C6, 0, 0, xsize - 1, 0 );
+	boxfill8(buf, xsize, COL8_FFFFFF, 1, 1, xsize - 2, 1 );
+	boxfill8(buf, xsize, COL8_C6C6C6, 0, 0, 0, ysize - 1);
+	boxfill8(buf, xsize, COL8_FFFFFF, 1, 1, 1, ysize - 2);
+	boxfill8(buf, xsize, COL8_848484, xsize - 2, 1, xsize - 2, ysize - 2);
+	boxfill8(buf, xsize, COL8_000000, xsize - 1, 0, xsize - 1, ysize - 1);
+	boxfill8(buf, xsize, COL8_C6C6C6, 2, 2, xsize - 3, ysize - 3);
+	boxfill8(buf, xsize, COL8_848484, 1, ysize - 2, xsize - 2, ysize - 2);
+	boxfill8(buf, xsize, COL8_000000, 0, ysize - 1, xsize - 1, ysize - 1);
+	make_wtitle8(buf, xsize, title, act);
+	return;
+}
+
+void make_wtitle8(unsigned char *buf, int xsize, char *title, char act)
 {
 	static char closebtn[14][16] = {
 		"OOOOOOOOOOOOOOO@",
@@ -216,16 +246,7 @@ void make_window8(unsigned char *buf, int xsize, int ysize, char *title, char ac
 		tc = COL8_C6C6C6;
 		tbc = COL8_848484;
 	}
-	boxfill8(buf, xsize, COL8_C6C6C6, 0,         0,         xsize - 1, 0        );
-	boxfill8(buf, xsize, COL8_FFFFFF, 1,         1,         xsize - 2, 1        );
-	boxfill8(buf, xsize, COL8_C6C6C6, 0,         0,         0,         ysize - 1);
-	boxfill8(buf, xsize, COL8_FFFFFF, 1,         1,         1,         ysize - 2);
-	boxfill8(buf, xsize, COL8_848484, xsize - 2, 1,         xsize - 2, ysize - 2);
-	boxfill8(buf, xsize, COL8_000000, xsize - 1, 0,         xsize - 1, ysize - 1);
-	boxfill8(buf, xsize, COL8_C6C6C6, 2,         2,         xsize - 3, ysize - 3);
-	boxfill8(buf, xsize, tbc,         3,         3,         xsize - 4, 20       );
-	boxfill8(buf, xsize, COL8_848484, 1,         ysize - 2, xsize - 2, ysize - 2);
-	boxfill8(buf, xsize, COL8_000000, 0,         ysize - 1, xsize - 1, ysize - 1);
+	boxfill8(buf, xsize, tbc, 3, 3, xsize - 4, 20);
 	putfonts8_asc(buf, xsize, 24, 4, tc, title);
 	for (y = 0; y < 14; y++) {
 		for (x = 0; x < 16; x++) {