Does anyone know how to ensure a CSS drop down menu goes OVER the existing content of a web page? And not hide behind it?

A link to the page may help, but have you tried z-index??

 

http://www.w3schools.com/css/pr_pos_z-index.asp for more information.

There are problems with the drop down part being hidden behind Javascript and Flash items, but it doesn't usually happen with ordinary html.

 

As said above, z-index is the basis of getting one item above another, but position is also often required and transparent for Flash videos. See item 4 here:-

http://www.wickham43.net/faq.php

which may not suit your situation but may help.

You can use css and javascript to bring it

I know there is issues with z-index within all IE browsers, not sure about IE9 tho

 

Also you CAN give flash elements a z-index as i have done this before. If i remeber you will need to give most elements/objects on your page a z-index for this to work in IE tho :'( so that the browser know what is going where. If you don't give it a value then IE thinks this is going at the top of the pack