I am using prototype windows for creating a modal dialog box. http://prototype-window.xilinus.com/. Most of the time the modal window shows up fine with right size specified and at the right place - center. Once in a while the modal window shows up very tiny in the center of the page. You can resize it but it is very tiny in the middle of the page. I am using .99 version of this windows.js. Has any one seen this problems before? Any insight of any ideas about how I should fix the problem.