This will allow you access to the tags:
<li><a ID="lnk1" runat="server" href="#view2" >Photo</a></li>
<li><a ID="lnk2" runat="server" href="#view3">Data</a></li>
<li><a ID="lnk3" runat="server" href="#view4">Cloud Shop</a></li>
<li><a ID="lnk4" runat="server" href="#view5">Upload</a></li>
<li><a ID="lnk5" runat="server" href="#view6">Site Check</a></li>
<li><a ID="lnk6" runat="server" href="#view7">Others</a></li>
Then in code behind you can do something like:
lnk4.Attributes.Add("class","active");
To give the link a css class of active.
UPDATE: I see you want access to the click events, I'd recommend using a LinkButton instead, easier to work with.