Styling alerts throughout whole site using dialog boxes

Styling alerts throughout whole site using dialog boxes

Hi,

I have lots of javascript alerts throughout my site, I need to style them up using a jquery dialog. Can anyone please tell me how I can setup a default dialog and populate it with the alert text?

A typical alert looks like this:

  window.alert("text here");

My current dialog looks like this:
   
            $('#sessionTimeout-dialog').dialog({
                autoOpen: false,
                width: 400,
                modal: true,
                closeOnEscape: true,
                buttons: {
                    "Log Out Now": function () {
                        window.location.href = o.logoutUrl;
                    },
   
                    "Stay Connected": function () {
                        $(this).dialog('close');
   

                    }
                }
            });

Can I set the defaults such as width and close on escape so I don't have to keep adding them for each instance, there are literally hundreds.

Many thanks in advance