Developing the skin and containers for a radio station. They're filling in the content. http://64.141.189.140

My skin works great in IE but in Firefox it has an occasional, extremely annoying gap at the top of the page before my skin. It usually appears the first time someone goes to a. Once the page is cached you're fine.

Another observation is that when the skin loads in FFX it is flush with the top and then it jumps down. It's almost like leaving space for the control panel or something. What is bizarre is that my right column (in the same table as everything else) does not jump down the page!

Any ideas? Is there a CSS fix?

I have everything margin & padding top as 0px. THANKS!

Not sure, but what you can try is this:

add

form{
height:0px;
}

OR

html{
height:100%
}

To your skin, mostly these kind of problems are caused by 100% defined for the Form in DNN

Well 99% of the problems are in IE, not in FF.

It's renders much more compliant with the W3C standard, although this doesn't mean the standard is alway logical for humans.

The 100% for the form is a DNN problem, not a browser problem IMO.

If you occasionally get the problem back it could be a caching problem.

As a test to make sure you could try to remove the style="height: 100%;" from the form tag in default.aspx (on a test machine) , if you still have the problem it's caused by something else.

I would not remove this permanently since it can be resolved from the skin (CSS) and you would have to apply this "core hack" after every upgrade.