Hi jtruxon ,
for the InsertHyperlink dialog, please change the code below(clean your browser cache after changed)
// Default window ornaments for the Tag dialog
editorconstant._tagDialogFeature = "resizable:0;dialogWidth:470px;dialogHeight:500px;";
For the browse child dialog, for now has not the setting for it yet. Sorry for your inconvenience.
Regards,
Ken