AJAX: Create Special Fixed Position Social Sharing Sidebar

Hello, what I need is a fixed-position bar with a picture "Share", ONLY WHEN I click on the picture it will then enlarge and request data via AJAX and show various social sharing buttons: Facebook, G+, Pinterest, Stumbleupon, Twitter IMPORTANT: The social sharing buttons MAY NOT be loaded when the site loads to prevent a slow loading speed. I suppose it is possible to use AJAX and iframes to load the sharing buttons only ON DEMAND when someone clicks If you believe it is possible and you can program a social sharing bar that only loads the buttons on request then bid. Thank you Oliver