I am involved in an international business and have to deal with different languages. I can deal with Portuguese and Spanish (with its special symbols) and I can deal with Japanese, but sometimes I have to have both on the same page and I can't deal with that. Is there a way to get different languages to display on the same webpage without corruption of the text?

If you use a Unicode character encoding, such as UTF-8, you should be able to mix whatever languages you desire.