Open Source Document Management System | OpenKM

About HTML and Java Script? kindly tell me that how can i make a program in html where there are 3 text boxes and a button. when i enter a number in 2 text boxes and then press button then it display result of both text boxes in 3rd text box. using java script function
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For this kind of questions I suggest you go to forum of javascript users. It's the right place for this kind of questions.