Creating advance table ....

Hi, every body

I had found some site and notice that thier page can let the browser load all thier table first,at the same time show it out and then after finish loading, some of the table will group together and became one large table.

I have created a big table and put all me content inside the table including some script like javascript and php. It take a lot of time to load the table and will only show the table after all the content is loaded. This make my page "blank" for a while.....How can i improve the table sience I have to put all content inside one table for the alignment.

**ps**
There are alot of nested table inside that big table.....

can anyone help me please....