Solved! Go to Solution.
Please post the errors your seeing.
Also, please use this site as your main resource for JS API content (API ref, samples, conceptual help and tutorials): http://developers.arcgis.com/en/javascript/
I primarily use Firebug with Firefox but also use Chrome and IE when I come across errors. I don't know why but sometimes one debugger may expose more information about a JS error than the other two. There have been times when it was more help to use the debugger in IE than Firebug.
Of course, you SHOULD test your application in different browsers to ensure consistency and that everything works. One example that comes to mind is if your application works with dates. I had some date formatting code that worked fine in Firefox and IE but returned "undefined" in Chrome. The same will also apply to any CSS styling that you do (even more so if you alter the CSS properties using javascript).