El usuario debe digitar la clave y la confirmación de la misma, si digito las dos correctamente debe de actualizar la clave en la base de datos, de lo contrario debe de indicar con un mensaje que las claves no son iguales.
Pero con él código que tengo actualiza el campo, coincidan o no las claves.

El código que actualiza es el siguiente:
if (String(Request("MM_update")) != "undefined" &&
String(Request("MM_recordId")) != "undefined") {
// create the sql update statement
MM_editQuery = "update " + MM_editTable + " set ";
for (var i=0; i+1 < MM_fields.length; i+=2) {
var formVal = MM_fields[i+1];
var MM_typesArray = MM_columns[i+1].split(",");
var delim = (MM_typesArray[0] != "none") ? MM_typesArray[0] : "";
var altVal = (MM_typesArray[1] != "none") ? MM_typesArray[1] : "";
var emptyVal = (MM_typesArray[2] != "none") ? MM_typesArray[2] : "";
if (formVal == "" || formVal == "undefined") {
formVal = emptyVal;
} else {
if (altVal != "") {
formVal = altVal;
} else if (delim == "'") { // escape quotes
formVal = "'" + formVal.replace(/'/g,"''") + "'";
} else {
formVal = delim + formVal + delim;
}
}
MM_editQuery += ((i != 0) ? "," : "") + MM_columns[i] + " = " + formVal;
}
MM_editQuery += " where " + MM_editColumn + " = " + MM_recordId;
if (!MM_abortEdit) {
// execute the update
var MM_editCmd = Server.CreateObject('ADODB.Command');
MM_editCmd.ActiveConnection = MM_editConnection;
MM_editCmd.CommandText = MM_editQuery;
MM_editCmd.Execute();
MM_editCmd.ActiveConnection.Close();
if (MM_editRedirectUrl) {
Response.Redirect(MM_editRedirectUrl);
}
}
}
Espero que me diera a entender
Muchas gracias