Editing the Feature Information dialog
Feature Information is displayed when a user clicks on a feature:
You can edit the size of this dialog in the map.aspx file, locate the following section:
<Cadcorp:OLFeatureInfoEx ID="OLFeatureInfo1" PopupHeight="150" PopupWidth="400" runat="server" MoreInfoTitleText="<%$ Resources:Cadcorp.Web.UI,UI_FI_Dialog_More_Info_Title_Text%>"
The PopupHeight="150" and PopupWidth="400" define the size of the dialog.