<asp:listview id="lst" runat="server" enablemodelvalidation="True" groupitemcount="3" xmlns:asp="#unknown">
InsertItemPosition="none">
<layouttemplate>
<div class="listview-container" style="padding: 5px; width: 750px;">
<div id="groupPlaceholder" runat="server">
</div>
</div>
</layouttemplate>
<grouptemplate>
<div class="listview-group" style="padding: 5px;">
<div id="itemPlaceholder" runat="server">
</div>
<div style="clear: both">
</div>
</div>
</grouptemplate>
<itemtemplate>
<div class="listview-item" style="padding: 5px; float: left; width: 235px;">
<h1>
<%# Eval("Instituename")%></h1>
<h2 style="text-align: left;">
Keywords:
<%# Eval("Keywords")%><br />
Phone:
<%# Eval("Contactno")%>
</h2>
<div class="contact">
<asp:button id="btncontact" runat="server" text="More.." commandargument="<%# Eval("uid") %>" />
</div>
<div style="clear: both">
</div>
</div>
<div style="clear: both; width: 474px;margin-removed10px; ">
<%# (Container.DataItemIndex != 0 && (Container.DataItemIndex + 1) % 6 == 0) ? @" <div id="divadd" style="height: 60px; width: 444px; border: solid 1px #ccc;font-weight:bold;vertical-align:middle;padding-removed35px;font-size:28px;removed: relative;removed -350px;text-align:center;"> Add Inserted Here</div>" : string.Empty%>
</div>
</itemtemplate>
</asp:listview>
i just place div instead td's and apply some sort of styles that it . it is now working fine...