<div  contentEditable="true" 
        style="  border-bottom-color:Blue; border-style: solid; border-width: 1px; border-color: inherit; font-size: 83%; overflow: auto; width: 604px; font-family: arial, sans-serif"
        id="divOK" runat="server" >

<strong>haha</strong>

</div>

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        this.divOK.InnerHtml = @" <a href='#'  target=_blank'' onclick=javascript:window.location='http://www.baidu.com'><font style='cursor:pointer; '>very good</font></a> &nbsp; ";