Wordpress shifting down?

On the new site im working on, when ever you go over a links the whole page shifts down (only in firefox) I thought it might of had to do with the bold cc tag but i removed it and its still happening..

any ideas why?

http://www.allmymexico.com/

 

Maybe your problem is here? i would replace this:

#navigator ul li a:hover {
	display: block;
	float: left;
/*          font-weight: bold;  */
	padding-right: 15px;
	padding-left: 15px;
	height: 25px;
	margin: 3px;
	line-height: 25px;
	color: #FFFFFF;
	text-decoration: none;
	background: #fc8241;
	border: 1px solid #f55a07;
}

HTML:

And put this there:

#navigator ul li a:hover {
	display: block;
	float: left;
	padding-right: 15px;
	padding-left: 15px;
	height: 25px;
	margin: 3px;
	line-height: 25px;
	color: #FFFFFF;
	text-decoration: underline;
	background: #f55a07;
	border-top: 1px solid #f55a07;
	border-right: 1px solid #f55a07;
	border-left: 1px solid #f55a07;
	border-bottom: 1px solid #f55a07;
}

HTML:

And see what happens.

 

Thanks for the help.. I tried replacing it and it is still doing it.. It dose it when once you put your mouse over any link on the page anywhere.. I dont understand what would cause it to happen globally like that...

any other ideas?

 

Well if all else fails, I would comment out anything in CSS with a hover in it until I found exactly which was doing it.

 

It was due to a tool tip addon! yay! fixed
thanks again for your help!