I think this is probably a CSS issue, but i am not really sure
I have loaded an example to
http://jsfiddle.net/paries/7CgZp/
The problem is why is there an empty box below widget5 and above widget 11.
I am using chrome , FF does not seem to load the resources at jsfiddle or i am doing it wrong.
I can not drag an element into that empty box either
Thanks for any help
Randy
found the solution.
this seems to work great
http://gridster.net