根据变量更改提交和重置按钮值文本语言

i m sure its an easy question but i m very stack now... and i was wondering if anyone can help me.. my problem is the following... I want to change from Greek to English language and vice verse the value of two buttons that is reset and submit, this is happening according to a variable that i take from a cookie. i m sure its an easy question but i m very stac