DataGrid直接弹出新窗口

<SCRIPT language="javascript">
function showGZNR(gznr){
   var w=window.open("about:blank","_blank","width=560px,height=350px,location=0,toolbar=0,menubar=0,scrollbars=1,directories=0,status=0,left="+(screen.availWidth-520)/2+",top="+(screen.availHeight-280)/2);

   w.document.write("<html><head><title>详细内容<");
   w.document.write("/");
   w.document.write("title><");
   w.document.write("/");
   w.document.write("head><body style=\"font-size:13px;LINE-HEIGHT:20px\"><div>");
   w.document.write("            "+gznr);
   w.document.write("</body></html>");
  }
</SCRIPT>
.cs

private void Sggrid3_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
  {
   if(e.Item.ItemType==ListItemType.Item||e.Item.ItemType==ListItemType.AlternatingItem)
   {
    e.Item.Cells[0].Visible=false;
    DataRowView dr=(DataRowView)e.Item.DataItem;
    e.Item.Cells[8].Text=GetRowFieldValue(dr,"DRJS");
    e.Item.Cells[9].Text=GetRowFieldValue(dr,"RJC");
    e.Item.Cells[11].Text=GetRowFieldValue(dr,"ZJYMD");
    string gznr1=GetRowFieldValue(dr,"gcdzjk").Trim().Replace("\n","");
    if(gznr1!=null&&gznr1.Length>30)
    {
     e.Item.Cells[13].Text="<a href=\"#\" onclick=\"showGZNR(\'"+gznr1+"\')\">"+gznr1.Substring(0,30)+"．．．</a>";
     e.Item.Cells[13].HorizontalAlign=HorizontalAlign.Left;
    }
   }
  }