Dialog Div Visible on load

Hi all,
I hope you can help me.
1st problem: When my page load, it displays the DIV that must be used
for the dialog.
2nd problem: When I open the dialog, it displays correctly, but when I
close it, it also does not want to open again.
I'm still very new to jquery and do not mind reading. Pls point me in
the right direction.
Kind regards