Hyperlink href attribute issue

Hello,
I have to site.  on the master page of each site i have defined hyperlink which allows user to navigate to site.
Website1:
<body>
<form id="form1" runat="server">
<div id="container">
<div id="Gap">
</div>
<div id="header">
<div id="GrayLine">
</div>
<div id="headerleft">
<div id="logo">
</div>
</div>
<div id="headercenter">
<ul id="links" runat="server">
<li><asp:HyperLink ID="Homelink" Visible="false" Text="Home" target="_parent" runat="server" /></li>
<li><asp:HyperLink ID="AboutLink" Text="About" target="_blank" runat="server" /></li>
<li><asp:HyperLink ID="ContactUs" Text="Contact Us" target="_parent" runat="server" /></li>
<li><asp:HyperLink href="#" ID="Providers" Text="Providers Click Here" t ...