Hi again, i find a way, maybe the less cost and time investment, so I choose AjaxToolKit for build an WebForm Login, by the way before starting, is anyones gets problems trying to do it? Im planning to use DropShadow Extender and RoundedCorners with Panels, this will be my first time to work with panels, please check this link: i want to put a login panel into something like screen showed when clicks the button or for example in stackoverflow when you try to inser an image or hyperlink in "ask a question", will be possible? how much effort for complete this?
If you are talking about 100% using ajax control toolkit, check out the ModalPanel example.
You could also go for a javascript library option like iBox, which would be a bit harder to integrate, but not much.
I much prefer doing this manually with javascript and css, if you know what you are doing it is not that hard, if you aren't familiar with those technologies it may take more work. Here is a good post that walks you through the basics
I use AjaxControlToolkit extensively in my application and its really simple.Being server side ajax I does emit a lot of javascript on your page. I suggest you use AJAX only where its required i.e. in cases where a page does lots of things and you want to make it more responsive something like a Dashboard kind of app.