diff --git a/assets/gitbook-fix.js b/assets/gitbook-fix.js
index d8f1f11..b64674b 100644
--- a/assets/gitbook-fix.js
+++ b/assets/gitbook-fix.js
@@ -1,6 +1,6 @@
 const WITH_SUMMARY_CLASS = "with-summary"
 
-var bookRoot;
+let bookRoot;
 
 function summaryOnOrOff () {
 	
diff --git a/index.php b/index.php
index 475b64b..46771b5 100644
--- a/index.php
+++ b/index.php
@@ -6,9 +6,32 @@ require_once "./src/Data/PageMeta.php";
 try {
 	
 	SiteMeta::load();
-	PageMeta::$book = SiteMeta::getBookshelf()->getRootBook();
-	PageMeta::$page = PageMeta::$book->getChilds()->getChilds()[0];
-	PageMeta::$isMainPage = true;
+	
+	// 格式化所给链接，并将链接转化为路径字符串数组
+	$tmp = $_GET['p'];
+	if (strlen($tmp) > 0 && $tmp[strlen($tmp) - 1] === '/')
+		$tmp = substr($tmp, 0, -1);
+	$uri = explode("/", $tmp, 2);
+	
+	if (sizeof($uri) > 0 && $uri[0] != null) {
+		// 非主页面，判定当前定义的 book
+		$tmp = SiteMeta::getBookshelf()->getBook($uri[0]);
+		if ($tmp == null) throw new Exception("Book required \"$uri[0]\" not found!");
+		PageMeta::$book = $tmp->getContentedNode();
+		// 判定当前页面
+		if (sizeof($uri) > 1 && $uri[1] != null) {
+			$tmp = PageMeta::$book->getPage($uri[1]);
+			if ($tmp == null) throw new Exception("Page required \"$uri[1]\" not found on book \"$uri[0]\"!");
+			PageMeta::$page = $tmp;
+		} else {
+			PageMeta::$page = PageMeta::$book->getChilds()->getChilds()[0];
+		}
+	} else {
+		// 主页面
+		PageMeta::$book = SiteMeta::getBookshelf()->getRootBook();
+		PageMeta::$page = PageMeta::$book->getChilds()->getChilds()[0];
+		PageMeta::$isMainPage = true;
+	}
 	
 	require "./template/header.php";
 	
@@ -21,22 +44,7 @@ try {
 			</ul>
 		</div>
 		<nav role="navigation">
-			<ul class="summary">
-				<?= SiteMeta::getBookshelf()->getHtml(); ?>
-				<li class="divider"></li>
-				<li class="chapter active" data-level="1.1" data-path="./"><a href="./">占位主页面</a></li>
-				<li class="chapter " data-level="1.2" data-path="api/">
-					<a href="#">占位章节</a>
-					<ul class="articles">
-						<li class="chapter " data-level="1.2.1" data-path="api/color.html"><a href="chp/page.html">占位页面</a></li>
-						<li class="chapter " data-level="1.2.2" data-path="api/suka-talk.html"><a href="chp/page-other.html">另一个占位页面</a></li>
-					</ul>
-				</li>
-				<li class="chapter " data-level="1.3" data-path="srv-dev.html"><a href="backnote.html">占位后记</a></li>
-				<li class="divider"></li>
-				<li><a href="https://github.com/Eyre-S/ph-Bookshelf" target="blank" class="gitbook-link">Generated with ph-Bookshelf</a></li>
-				<li><a href="https://www.gitbook.com" target="blank" class="gitbook-link">Front-End by GitBook</a></li>
-			</ul>
+			<?= SiteMeta::getBookshelf()->getHtml(); ?>
 		</nav>
 	</div>
 	<div class="book-body">
diff --git a/src/Data/PageMeta.php b/src/Data/PageMeta.php
index 7df9bea..add6c7e 100644
--- a/src/Data/PageMeta.php
+++ b/src/Data/PageMeta.php
@@ -7,7 +7,7 @@ class PageMeta {
 	
 	public static BookContented $book;
 	public static Page $page;
-	public static bool $isMainPage;
+	public static bool $isMainPage = false;
 	
 	public static function getPageTitle (): string {
 		return self::$page->getName()." - ".self::$book->getName();
diff --git a/src/Element/Book.php b/src/Element/Book.php
index f45687a..03e2f98 100644
--- a/src/Element/Book.php
+++ b/src/Element/Book.php
@@ -1,6 +1,7 @@
 <?php
 
 require_once "./src/Element/BookCollection.php";
+require_once "./src/Element/BookContent/BookContented.php";
 
 class Book {
 	
@@ -53,7 +54,14 @@ class Book {
 	}
 	
 	public function getHtml (): string {
-		return "<li class='link'><a class='link' href='$this->id'>$this->name</a></li>";
+		return "<li class='link" . (PageMeta::$book->getId()==$this->id?" active":"") . "'><a class='link' href='/$this->id'>$this->name</a></li>";
+	}
+	
+	/**
+	 * @throws Exception
+	 */
+	public function getContentedNode (): BookContented {
+		return BookContented::parseString(file_get_contents("./data/$this->id/book.xml"));
 	}
 	
 }
\ No newline at end of file
diff --git a/src/Element/BookCollection.php b/src/Element/BookCollection.php
index 23299ce..7c3a2be 100644
--- a/src/Element/BookCollection.php
+++ b/src/Element/BookCollection.php
@@ -72,7 +72,7 @@ class BookCollection {
 	
 	public function getHtml (): string {
 		$str = "";
-		if ($this->name != self::ROOT) $str .= "<li><a class='book-collection' href='#'>$this->name</a><ul class='book-collection'>";
+		if ($this->name != self::ROOT) $str .= "<li><a class='book-collection' href='#'>$this->name</a><ul class='book-collection summary'>";
 		foreach ($this->array as $node) {
 			$str .= $node->getHtml();
 		}
@@ -80,4 +80,19 @@ class BookCollection {
 		return $str;
 	}
 	
+	public function getBook (string $id): ?Book {
+		
+		foreach ($this->array as $node) {
+			if ($node instanceof Book && $node->getId() == $id)
+				return $node;
+			else if ($node instanceof BookCollection) {
+				$got = $node->getBook($id);
+				if ($got != null) return $got;
+			}
+		}
+		
+		return null;
+		
+	}
+	
 }
diff --git a/src/Element/BookContent/BookContented.php b/src/Element/BookContent/BookContented.php
index adb8c0f..9de6160 100644
--- a/src/Element/BookContent/BookContented.php
+++ b/src/Element/BookContent/BookContented.php
@@ -63,4 +63,12 @@ class BookContented {
 		return $this->childs;
 	}
 	
+	public function getSummaryHtml (): string {
+		return $this->childs->getSummaryHtml();
+	}
+	
+	public function getPage (string $id): Page {
+		return $this->childs->getPage($id);
+	}
+	
 }
diff --git a/src/Element/BookContent/Chapter.php b/src/Element/BookContent/Chapter.php
index 8354b97..b5ffb9a 100644
--- a/src/Element/BookContent/Chapter.php
+++ b/src/Element/BookContent/Chapter.php
@@ -64,4 +64,29 @@ class Chapter {
 		return $this->parent;
 	}
 	
+	public function getSummaryHtml (): string {
+		$str = "";
+		if ($this->parent != null) $str .= "<li class='chapter'><a class='page-chapter' href='#'>$this->name</a><ul class='page-chapter summary'>";
+		foreach ($this->childs as $node) {
+			$str .= $node->getSummaryHtml();
+		}
+		if ($this->parent != null) $str .= "</ul></li>";
+		return $str;
+	}
+	
+	public function getPage (string $id): ?Page {
+		
+		foreach ($this->childs as $node) {
+			if ($node instanceof Page && $node->getId() == $id)
+				return $node;
+			else if ($node instanceof Chapter) {
+				$got = $node->getPage($id);
+				if ($got != null) return $got;
+			}
+		}
+		
+		return null;
+		
+	}
+	
 }
diff --git a/src/Element/BookContent/Page.php b/src/Element/BookContent/Page.php
index 47b74c5..22abaec 100644
--- a/src/Element/BookContent/Page.php
+++ b/src/Element/BookContent/Page.php
@@ -71,4 +71,17 @@ class Page {
 		return $this->parent;
 	}
 	
+	public function getSummaryHtml (): string {
+		$str = "<li class='page-contented chapter" . (PageMeta::$page->getId()==$this->id?" active":"") . "'><a class='page-contented' href='/" . (PageMeta::$page->getId()==$this->id?"#":(PageMeta::$book->getId()."/".$this->id)) . "'>$this->name</a>";
+		if (sizeof($this->segues) > 0) {
+			$str .= "<ul class='page-contented summary'>";
+			foreach ($this->segues as $node) {
+				$str .= $node->getSummaryHtml();
+			}
+			$str .= "</ul>";
+		}
+		$str .= "</li>";
+		return $str;
+	}
+	
 }
diff --git a/src/Element/BookContent/Segment.php b/src/Element/BookContent/Segment.php
index 6d4be6a..7423fc3 100644
--- a/src/Element/BookContent/Segment.php
+++ b/src/Element/BookContent/Segment.php
@@ -49,4 +49,8 @@ class Segment {
 		return $this->parent;
 	}
 	
+	public function getSummaryHtml (): string {
+		return "<li class='page-segment chapter'><a href='/" . (PageMeta::$page->getId()==$this->parent->getId()?"":PageMeta::$book->getId()."/".$this->parent->getId()."") . "#$this->id'>$this->name</a></li>";
+	}
+	
 }
\ No newline at end of file
diff --git a/src/Element/Bookshelf.php b/src/Element/Bookshelf.php
index 8c88e17..5c0cdbd 100644
--- a/src/Element/Bookshelf.php
+++ b/src/Element/Bookshelf.php
@@ -75,9 +75,15 @@ class Bookshelf {
 		$str .= $this->links->getHtml();
 		$str .= "<li class='divider'></li>";
 		$str .= $this->books->getHtml();
+		$str .= "<li class='divider'></li>";
+		$str .= PageMeta::$book->getSummaryHtml();
+		$str .= "<li class='divider'></li><li><a href='https://github.com/Eyre-S/ph-Bookshelf' target='blank' class='gitbook-link'>Generated with ph-Bookshelf</a></li><li><a href='https://www.gitbook.com' target='blank' class='gitbook-link'>Front-End by GitBook</a></li>";
 		$str .= "</ul>";
-		// TODO books list
 		return $str;
 	}
 	
+	public function getBook (string $id): ?Book {
+		return $this->books->getBook($id);
+	}
+	
 }