Veena,
The first thing I see is in your Script.js you have an issue with your require and parameter alignment:
"dijit/form/Button" is assigned the parameter name of number because you have "dijit/form/Button" in front of "dojo/number".
Second Have you cleared your cache and tested FireFox again? It is highly unlikely that your code would work in FireFox and not Chrome.
You app has way to many dependencies and use of asp to allow for proper debugging of your environment by others. If you need help with a particular issue you need to simplify a sample that demonstrates your issue, that others can run to test what you are seeing.
