In our organization, we are still on .net 1.1 environment, using javascript, a few open source applications/widgets. Development is done using Visual Studio 2003, grid view, and iframes. Our application works in Internet Explorer 7 and IE 8 (in compatibilily mode). Can anyone give any basic steps we can take to get our application to work cross browsers? What are the starting locations we can get at to start making existing code work in different browsers?
['https://Stackoverflow.com/questions/2568467', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/-1/']
Use jQuery for reliable cross browser JavaScript

Was it VS 2k or VS 2k3 that "helped" the developer by rewriting their HTML (in all CAPS no less)?
1. Install and Run Firefox (and get the Firebug addon).
2. Enter your application and open the Firebug console (F12) to see what issues your application is encountering. (in the Console Tab)
3. Start with the Errors.
	1. Change any JavaScript that is doing things like *document.all.xxxx* to use **document.getElementById()** or **document.forms['name'].elements['name']** etc.
	2. Change any CSS that is using IE only styles. e.g. "*cursor:hand*" should be "**cursor:pointer**" etc.
4. Repeat for Warnings once all the Errors are gone
5. If your app was running in Quirks mode, consider adding a doctype so that you can render in Standards mode (makes CSS/JS much more compliant)... however note that this will very likely "screw up" your pages for a bit until you iron out the kinks.
6. In the future, be sure to test in all major browsers. I'd recommend developing in Firefox or Chrome first, then tweaking if needed for IE.