diff --git a/models/git.go b/models/git.go
index 8e1bc4e32c..6bae724877 100644
--- a/models/git.go
+++ b/models/git.go
@@ -38,8 +38,8 @@ func (file *RepoFile) LookupBlob() (*git.Blob, error) {
 }
 
 // GetBranches returns all branches of given repository.
-func GetBranches(userName, reposName string) ([]string, error) {
-	repo, err := git.OpenRepository(RepoPath(userName, reposName))
+func GetBranches(userName, repoName string) ([]string, error) {
+	repo, err := git.OpenRepository(RepoPath(userName, repoName))
 	if err != nil {
 		return nil, err
 	}
@@ -56,8 +56,16 @@ func GetBranches(userName, reposName string) ([]string, error) {
 	return brs, nil
 }
 
-func GetTargetFile(userName, reposName, branchName, commitId, rpath string) (*RepoFile, error) {
-	repo, err := git.OpenRepository(RepoPath(userName, reposName))
+func IsBranchExist(userName, repoName, branchName string) bool {
+	repo, err := git.OpenRepository(RepoPath(userName, repoName))
+	if err != nil {
+		return false
+	}
+	return repo.IsBranchExist(branchName)
+}
+
+func GetTargetFile(userName, repoName, branchName, commitId, rpath string) (*RepoFile, error) {
+	repo, err := git.OpenRepository(RepoPath(userName, repoName))
 	if err != nil {
 		return nil, err
 	}
@@ -102,8 +110,8 @@ func GetTargetFile(userName, reposName, branchName, commitId, rpath string) (*Re
 }
 
 // GetReposFiles returns a list of file object in given directory of repository.
-func GetReposFiles(userName, reposName, branchName, commitId, rpath string) ([]*RepoFile, error) {
-	repo, err := git.OpenRepository(RepoPath(userName, reposName))
+func GetReposFiles(userName, repoName, branchName, commitId, rpath string) ([]*RepoFile, error) {
+	repo, err := git.OpenRepository(RepoPath(userName, repoName))
 	if err != nil {
 		return nil, err
 	}
@@ -217,13 +225,27 @@ func GetCommit(userName, repoName, branchname, commitid string) (*git.Commit, er
 	return repo.GetCommit(branchname, commitid)
 }
 
-// GetCommits returns all commits of given branch of repository.
-func GetCommits(userName, reposName, branchname string) (*list.List, error) {
-	repo, err := git.OpenRepository(RepoPath(userName, reposName))
+// GetCommitsByBranch returns all commits of given branch of repository.
+func GetCommitsByBranch(userName, repoName, branchName string) (*list.List, error) {
+	repo, err := git.OpenRepository(RepoPath(userName, repoName))
 	if err != nil {
 		return nil, err
 	}
-	r, err := repo.LookupReference(fmt.Sprintf("refs/heads/%s", branchname))
+	r, err := repo.LookupReference(fmt.Sprintf("refs/heads/%s", branchName))
+	if err != nil {
+		return nil, err
+	}
+	return r.AllCommits()
+}
+
+// GetCommitsByCommitId returns all commits of given commitId of repository.
+func GetCommitsByCommitId(userName, repoName, commitId string) (*list.List, error) {
+	repo, err := git.OpenRepository(RepoPath(userName, repoName))
+	if err != nil {
+		return nil, err
+	}
+	fmt.Println(userName, repoName, commitId)
+	r, err := repo.LookupReference(commitId)
 	if err != nil {
 		return nil, err
 	}
diff --git a/routers/repo/commit.go b/routers/repo/commit.go
index 3d00f8d747..11aab67caa 100644
--- a/routers/repo/commit.go
+++ b/routers/repo/commit.go
@@ -5,13 +5,22 @@
 package repo
 
 import (
+	"container/list"
+	"fmt"
+	"path"
+
 	"github.com/codegangsta/martini"
+
 	"github.com/gogits/gogs/models"
 	"github.com/gogits/gogs/modules/middleware"
 )
 
 func Commits(ctx *middleware.Context, params martini.Params) {
-	brs, err := models.GetBranches(params["username"], params["reponame"])
+	userName := params["username"]
+	repoName := params["reponame"]
+	branchName := params["branchname"]
+
+	brs, err := models.GetBranches(userName, repoName)
 	if err != nil {
 		ctx.Handle(200, "repo.Commits", err)
 		return
@@ -20,21 +29,28 @@ func Commits(ctx *middleware.Context, params martini.Params) {
 		return
 	}
 
-	ctx.Data["IsRepoToolbarCommits"] = true
-	commits, err := models.GetCommits(params["username"],
-		params["reponame"], params["branchname"])
+	var commits *list.List
+	if models.IsBranchExist(userName, repoName, branchName) {
+		commits, err = models.GetCommitsByBranch(userName, repoName, branchName)
+	} else {
+		commits, err = models.GetCommitsByCommitId(userName, repoName, branchName)
+	}
+
 	if err != nil {
 		ctx.Handle(404, "repo.Commits", nil)
 		return
 	}
-	ctx.Data["Username"] = params["username"]
-	ctx.Data["Reponame"] = params["reponame"]
+
+	ctx.Data["Username"] = userName
+	ctx.Data["Reponame"] = repoName
 	ctx.Data["CommitCount"] = commits.Len()
 	ctx.Data["Commits"] = commits
+	ctx.Data["IsRepoToolbarCommits"] = true
 	ctx.HTML(200, "repo/commits")
 }
 
 func Diff(ctx *middleware.Context, params martini.Params) {
+	fmt.Println(params["branchname"])
 	commit, err := models.GetCommit(params["username"], params["reponame"], params["branchname"], params["commitid"])
 	if err != nil {
 		ctx.Handle(404, "repo.Diff", err)
@@ -47,11 +63,12 @@ func Diff(ctx *middleware.Context, params martini.Params) {
 		return
 	}
 
-	shortSha := params["commitid"][:7]
+	shortSha := params["commitid"][:10]
 	ctx.Data["Title"] = commit.Message() + " · " + shortSha
 	ctx.Data["Commit"] = commit
 	ctx.Data["ShortSha"] = shortSha
 	ctx.Data["Diff"] = diff
 	ctx.Data["IsRepoToolbarCommits"] = true
+	ctx.Data["SourcePath"] = "/" + path.Join(params["username"], params["reponame"], "src", params["commitid"])
 	ctx.HTML(200, "repo/diff")
 }
diff --git a/routers/repo/repo.go b/routers/repo/repo.go
index 435587472a..3c8d24a6a6 100644
--- a/routers/repo/repo.go
+++ b/routers/repo/repo.go
@@ -57,19 +57,23 @@ func Single(ctx *middleware.Context, params martini.Params) {
 		return
 	}
 
+	branchName := params["branchname"]
+	userName := params["username"]
+	repoName := params["reponame"]
+
 	// Get tree path
 	treename := params["_1"]
 
 	if len(treename) > 0 && treename[len(treename)-1] == '/' {
 		ctx.Redirect("/" + ctx.Repo.Owner.LowerName + "/" +
-			ctx.Repo.Repository.Name + "/src/" + params["branchname"] + "/" + treename[:len(treename)-1])
+			ctx.Repo.Repository.Name + "/src/" + branchName + "/" + treename[:len(treename)-1])
 		return
 	}
 
 	ctx.Data["IsRepoToolbarSource"] = true
 
 	// Branches.
-	brs, err := models.GetBranches(params["username"], params["reponame"])
+	brs, err := models.GetBranches(userName, repoName)
 	if err != nil {
 		ctx.Handle(404, "repo.Single(GetBranches)", err)
 		return
@@ -80,15 +84,20 @@ func Single(ctx *middleware.Context, params martini.Params) {
 	}
 	ctx.Data["Branches"] = brs
 
-	repoFile, err := models.GetTargetFile(params["username"], params["reponame"],
-		params["branchname"], params["commitid"], treename)
+	var commitId string
+	if !models.IsBranchExist(userName, repoName, branchName) {
+		commitId = branchName
+	}
+
+	repoFile, err := models.GetTargetFile(userName, repoName,
+		branchName, commitId, treename)
 	if err != nil && err != models.ErrRepoFileNotExist {
 		ctx.Handle(404, "repo.Single(GetTargetFile)", err)
 		return
 	}
 
-	branchLink := "/" + ctx.Repo.Owner.LowerName + "/" + ctx.Repo.Repository.Name + "/src/" + params["branchname"]
-	rawLink := "/" + ctx.Repo.Owner.LowerName + "/" + ctx.Repo.Repository.Name + "/raw/" + params["branchname"]
+	branchLink := "/" + ctx.Repo.Owner.LowerName + "/" + ctx.Repo.Repository.Name + "/src/" + branchName
+	rawLink := "/" + ctx.Repo.Owner.LowerName + "/" + ctx.Repo.Repository.Name + "/raw/" + branchName
 
 	if len(treename) != 0 && repoFile == nil {
 		ctx.Handle(404, "repo.Single", nil)
@@ -126,8 +135,8 @@ func Single(ctx *middleware.Context, params martini.Params) {
 
 	} else {
 		// Directory and file list.
-		files, err := models.GetReposFiles(params["username"], params["reponame"],
-			params["branchname"], params["commitid"], treename)
+		files, err := models.GetReposFiles(userName, repoName,
+			branchName, commitId, treename)
 		if err != nil {
 			ctx.Handle(404, "repo.Single(GetReposFiles)", err)
 			return
@@ -166,8 +175,8 @@ func Single(ctx *middleware.Context, params martini.Params) {
 		}
 	}
 
-	ctx.Data["Username"] = params["username"]
-	ctx.Data["Reponame"] = params["reponame"]
+	ctx.Data["Username"] = userName
+	ctx.Data["Reponame"] = repoName
 
 	var treenames []string
 	Paths := make([]string, 0)
@@ -185,8 +194,8 @@ func Single(ctx *middleware.Context, params martini.Params) {
 	}
 
 	// Get latest commit according username and repo name.
-	commit, err := models.GetCommit(params["username"], params["reponame"],
-		params["branchname"], params["commitid"])
+	commit, err := models.GetCommit(userName, repoName,
+		branchName, commitId)
 	if err != nil {
 		log.Error("repo.Single(GetCommit): %v", err)
 		ctx.Handle(404, "repo.Single(GetCommit)", err)
@@ -194,6 +203,8 @@ func Single(ctx *middleware.Context, params martini.Params) {
 	}
 	ctx.Data["LastCommit"] = commit
 
+	ctx.Data["CommitId"] = commitId
+
 	ctx.Data["Paths"] = Paths
 	ctx.Data["Treenames"] = treenames
 	ctx.Data["BranchLink"] = branchLink
diff --git a/templates/repo/commits.tmpl b/templates/repo/commits.tmpl
index 2f308a108d..efe35936c4 100644
--- a/templates/repo/commits.tmpl
+++ b/templates/repo/commits.tmpl
@@ -27,7 +27,7 @@
                 {{range $r}}
                 <tr>
                     <td class="author"><img class="avatar" src="{{AvatarLink .Committer.Email}}" alt=""/><a href="/user/{{.Committer.Name}}">{{.Committer.Name}}</a></td>
-                    <td class="sha"><a class="label label-success" href="/{{$username}}/{{$reponame}}/commit/{{.Id}} ">{{SubStr .Id.String 0 7}} </a></td>
+                    <td class="sha"><a class="label label-success" href="/{{$username}}/{{$reponame}}/commit/{{.Id}} ">{{SubStr .Id.String 0 10}} </a></td>
                     <td class="message">{{.Message}} </td>
                     <td class="date">{{TimeSince .Committer.When}}</td>
                 </tr>
@@ -37,4 +37,4 @@
         </div>
     </div>
 </div>
-{{template "base/footer" .}}
\ No newline at end of file
+{{template "base/footer" .}}
diff --git a/templates/repo/diff.tmpl b/templates/repo/diff.tmpl
index 38f19b36f5..809a4873c3 100644
--- a/templates/repo/diff.tmpl
+++ b/templates/repo/diff.tmpl
@@ -6,7 +6,7 @@
     <div id="source">
         <div class="panel panel-info diff-box diff-head-box">
             <div class="panel-heading">
-                <a class="pull-right btn btn-primary btn-sm" href="#commit-source">Browse Source</a>
+                <a class="pull-right btn btn-primary btn-sm" href="{{.SourcePath}}">Browse Source</a>
                 <h4>{{.Commit.Message}}</h4>
             </div>
             <div class="panel-body">
@@ -57,7 +57,7 @@
                     </span>
                     <span class="del" data-line="{{.Deletion}}">- {{.Deletion}}</span>
                 </div>
-                <a class="btn btn-default btn-sm pull-right" href="#">View File</a>
+                <a class="btn btn-default btn-sm pull-right" href="{{$.SourcePath}}/{{.Name}}">View File</a>
                 <span class="file">{{.Name}}</span>
             </div>
             <div class="panel-body file-body file-code code-view code-diff">
@@ -411,4 +411,4 @@
         </div> -->
     </div>
 </div>
-{{template "base/footer" .}}
\ No newline at end of file
+{{template "base/footer" .}}
diff --git a/templates/repo/single.tmpl b/templates/repo/single.tmpl
index ed04be0779..4c9406762c 100644
--- a/templates/repo/single.tmpl
+++ b/templates/repo/single.tmpl
@@ -11,7 +11,7 @@
             {{ $n := len .Treenames}}
             {{if not .IsFile}}<button class="btn btn-default pull-right hidden"><i class="fa fa-plus-square"></i>Add File</button>{{end}}
             <div class="dropdown branch-switch">
-                <a href="#" class="btn btn-success dropdown-toggle" data-toggle="dropdown"><i class="fa fa-chain"></i>{{.Branchname}}&nbsp;&nbsp;
+                <a href="#" class="btn btn-success dropdown-toggle" data-toggle="dropdown"><i class="fa fa-chain"></i>{{if .CommitId}}{{SubStr .CommitId 0 10}}{{else}}{{.Branchname}}{{end}}&nbsp;&nbsp;
                     <b class="caret"></b></a>
                 <ul class="dropdown-menu">
                     {{range .Branches}}
@@ -41,4 +41,4 @@
         {{end}}
     </div>
 </div>
-{{template "base/footer" .}}
\ No newline at end of file
+{{template "base/footer" .}}