>we have a very complex solution This is my experience as well, to do it correctly, it needs to get many minute details exactly right. They still developing c

>we have a very complex solution This is my experience as well, to do it correctly, it needs to get many minute details exactly right. They still developing canvas so my proposal is to forget about these extremely complex solutions and add new property to canvas that would make width/height same as client width/height (perhaps with one event to let canvas know it was resized).