In publishing portal i have created one page which have "Html Editor".When i open page in edit mode and paste my html content in html editor,it takes all contents like image tags,text....but does not take hyperlinks.It gives error while i click on "Submit for Approval" like


This page contains content or formatting that is not valid. You can find more information in the affected sections.


when i put hyperlink

e.g.
<a href="welcome.aspx">Welcome</a>

it converts it to 

<a>Welcome</a>

or when i paste 

<a href="welcome.aspx"><img id="idImg" runat="server" src="/Style%20Library/someimg.gif" /></a>

it converts it to

<img id="idImg" runat="server" src="/Style%20Library/someimg.gif" />

My content type have "Page Content" which is Html Editor.

In page layout i have

<PublishingWebControls:richhtmlfield  id="idHtml" FieldName="PublishingPageContent" AllowExternalUrls="True" AllowImages="True" AllowHTMLSourceEditing="True" AllowHyperlinks="True" runat="server"></PublishingWebControls:RichHtmlField>