Sharepoint: The search box is not visible and menu is changing in SharePoint on settings pages

Search text Box:

Set visible false in PlaceHolderSearchArea container

<asp:ContentPlaceHolder ID="PlaceHolderSearchArea" runat="server" Visible="false">

<SharePoint:DelegateControl runat="server" ControlId="SmallSearchInputBox" Version="4" />

</asp:ContentPlaceHolder>

Add following container

<asp:ContentPlaceHolder ID="PlaceHolderSearchAreaCustom" runat="server">

<SharePoint:DelegateControl ID="DelegateControl1" runat="server" ControlId="SmallSearchInputBox"

Version="4" />

</asp:ContentPlaceHolder>

Custom Menu:

Move SharePoint:AspMenu above the content place holder and set visible false the content place holder.

<SharePoint:AspMenu ID="CustomMenu" runat="server" EnableViewState="false" AccessKey="<%$Resources:wss,navigation_accesskey%>"

UseSimpleRendering="true" UseSeparateCSS="false" Orientation="Horizontal" StaticDisplayLevels="1"

MaximumDynamicDisplayLevels="25" SkipLinkText="" CssClass="s4-tn">

<asp:MenuItemBinding DataMember="Menu" TextField="text" ValueField="text" NavigateUrlField="url" />

<asp:MenuItemBinding DataMember="SubMenu" NavigateUrlField="url" TextField="text"

ValueField="text" />

</DataBindings>

</SharePoint:AspMenu>

<asp:ContentPlaceHolder ID="PlaceHolderTopNavBar" runat="server" Visible="false">

<asp:ContentPlaceHolder ID="PlaceHolderHorizontalNav" runat="server">

</asp:ContentPlaceHolder>

Sharepoint