http://wiki.script.aculo.us/scriptaculous/show/Demos It has good resource, you can use and built your own!!
I dug this one up. . . http://www.tamingthebeast.net/generators/popup-hover-ad.htm#preview-hover Pretty easy for someone with my dev skills. . . -jay
im not sure what they are using but if i went to a site that threw a popup like that in my face i would defo be leaving again!