I believe Heatheranne and Sue have answered your questions.
If you don't want to use infrared you can buy a Exo Terra Sun Glo bulb that has a concentrated beam of light. You don't have to turn them up high to produce the ambient air heat due to the light being concentrated. I always recomend plant cover whether it be fake or live when using lights. Frogs that are nocturnal naturaly seek shelter from sunlight so you should provide this cover for them in their home as well. You can buy a ceramic heat emitter which is a bulb that doesn't produce light. It only produces heat. You also want to use a dimmer switch with these as well because they get pretty hot.
If the location your frog is in the house provides plenty of natural light then you can use infrared or the ceramic heat emitter and they will still have their 12 hour day/night cycle intact. The basking lights like the Sun Glo I mentioned can provide light and heat and also help with the day/night cycle if the room is dim and doesn't provide much light. As long as you have the dimmer lamp you shouldn't have to worry about cooking your frog because you can control the output.
Please note that lights burn off humidity. You will have to mist a few extra times per day to keep humidity levels within the 70 to 80% range.