why does my logo look different in IE than in FF?

Hi every one I am a new user to Zen Cart I put up a new logo (I know it needs to be smaller0 the problem I am having is when I look at the web site in Fire Fox it looks good. Then I look at in explorer and it don't look the same. can some one help me

https://www.funforallatv.com

Logo is the same but owing to IE quirks it eapands the width of your site to contain the logo width

My site is the same way. I've been desperately trying to figure out what the problem is. Mine gets cut off on the bottom in IE.

https://www.undergroundsmoke.com

I've gone into the stylesheet and tryed to give #navCatTabs ul, #navCatTabsWrapper, #logo, and #logoWrapper all heights but nothing worked. I also went into the files and manually set HEADER_LOGO_HEIGHT to my logo's height and that didnt work either. I even saw the containing table is using a class called header, but there is no .header in the stylesheet.

Any help would be much appreciated.

It's almost like you need to go into the admin panel to authorize or refresh the files before they take affect? I'm not sure. But my logo is being read from the template_default, so I know I'm editing the right file.

For underground...Try
find this in the stylesheet and seperate it as in the second box

#logo, .centerBoxContents, .specialsListBoxContents, .categoryListBoxContents, .centerBoxContentsAlsoPurch, .attribImg {
	float: left;
	}

#logo {
        height:135px;
	float: left;
	}
.centerBoxContents, .specialsListBoxContents, .categoryListBoxContents, .centerBoxContentsAlsoPurch, .attribImg {
	float: left;
	}