Ad with close button and floating ad with close button

I need html code of an ad with close button and I also need html code of floating ad with close button.If someone knows how to do it , please post html.

Here are examples of scripts that may be helpful:
http://www.dynamicdrive.com/dynamici.../stayontop.htm
http://www.dynamicdrive.com/dynamicindex17/floatbar.htm
http://www.dynamicdrive.com/dynamici.../dropinbox.htm