popover window that remains open even if user navigates to another page?
i need to put an iframe on every single page of my website, but i dont want the content of the iframe to reload everytime the user navigates to another page. I have seen that before on some pages like Facebook chat. There you can navigate to another page and the chat window stays open without reloading. I wonder how is that accomplished because i need it so much since i have a chat too and its annoying to have it reload and log you in every time you navigate it to other page. I hope you can help me.