Hi. I've seen sites done this and I'm really curious how people do it. It will be great if someone knows what kind of technology or how they do it. If u know any resources, like books, that I can learn from then that will be great.
Here's a sample from a site that has this kind of feature.
If u click on the login link then it will pop up a customized pop-up window and also the background becomes dark as well.
Any help will be great. Thanks.