i have a website where i have them layer type popups when you click on a link to open them and i want to make it modal. i have seen sites that have these and they have a semi transparent background blocking out the website and displaying the modal popup over the top so you cant interact with the site, only the popup.
how do i do that with my existing popups?? ive seen popup layers out there that do this but i dont want to change my entire site, i jsut want to add this overlay easily, how do i do it?? i cant work it out.