Alright, I'm attempting some image replacement here, and I got the desired effect in Gecko browsers, but it does not work in IE and it's had me scratching my head. Here's the link:

http://www.msue.msu.edu/emergency/new/1minute.html

Now, if you load it in a Gecko browser, then turn images off (leaving CSS on), the text underneath the "1 Minute Tips Archive" heading shows through. However, if you load it in IE, the text shows up on top of the header image rather than behind it.

Here's the XHTML:
HTML Code:
<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE html 
     PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
     "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
	<head>
		<title>MSU Extension Emergency Management -- 1-Minute Tips Archive</title>
		<link rel="stylesheet" type="text/css" href="style.css" />
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  <h1 id="title" title="MSUE Emergency Management"><a class="headlink" href="index.html"></a><a href="index.html">MSU 
    Extension Emergency Management</a></h1>
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                <td class="sbar" align="left" valign="middle"> Search The Site:</td>
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                  <input id="searchtext" type="text" name="query" size="17" maxlength="100" /></td>
                
              <td id="searchcell" valign="middle" align="right"><input type="image" src="images/searchbutton.jpg" value="Search" name="B1" /></td>
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  <div id="content"> 
    <div id="oneminutearea"> 
      <h2 id="oneminhead">1-Minute Tips Archive</h2>
      <div class="contenttext"> 
        <p>This area allows you to access previous 1-Minute Tip messages. All 
          documents are in Microsoft Word format. Also, the documents are listed 
          in the order of most recent first.</p>
        <ul class="linklist">
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/hurricanes07sep04.doc" onclick="window.open(this.href,'_blank');return false;">Hurricanes</a> 
            (Tue, 07 Sep 2004)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/extensionassistance26aug04.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Extension Assistance after Storm Events</a> (Thu, 26 Aug 2004)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/criticalbloodshortage06jul04.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Critical Blood Shortage</a> (Tue, 06 Jul 2004)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/animalbiosecurity14jun04.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Animal Biosecurity When Exhibiting at Fairs</a> (Mon, 14 Jun 2004)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/morefloodresourcesfromeden09Jun04.doc" onclick="window.open(this.href,'_blank');return false;"> 
            More Flood Resources from EDEN</a> (Wed, 09 Jun 2004)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/floodingandwinddamageinthemid-west24May04.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Flooding and Wind Damage in the Mid-West</a> (Mon, 24 May 2004)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/wildfireseasonpart320apr04.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Wildfire Season Part 3</a> (Tue, 20 Apr 2004)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/michiganwildfirefactorfiction14apr04.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Wildfire Season Part 2</a> (Wed, 14 Apr 2004)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/wildfireseasonpart102apr04.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Wildfire Season Part 1</a> (Fri, 02 Apr 2004)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/ricin12feb04.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Ricin</a> (Thu, 12 Feb 2004)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/whatcausesmadcow16jan04.doc" onclick="window.open(this.href,'_blank');return false;"> 
            BSE Part 2</a> (Fri, 16 Jan 2004)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/bsepart127dec03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            BSE Part 1</a> (Sat, 27 Dec 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/1-minutetipsnowarchived18dec03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            1-Minute Tips Now Archived</a> (Thu, 02 Dec 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/usdacountyemergencyboards02dec03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            USDA County Emergency Boards</a> (Tue, 02 Dec 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/californiawildfires28oct03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            California Wildfires</a> (Tue, 28 Oct 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/msuestafftraining17oct03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            MSUE Staff Training</a> (Fri, 17 Oct 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/familyemergencykits29aug03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Family Emergency Kits</a> (Fri, 29 Aug 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/northeastpoweroutage14aug03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Northeast Power Outage</a> (Thu, 14 Aug 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/methlabsincreasing21jul03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Meth Labs</a> (Mon, 21 Jul 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/communicatingduringdisasterevents09jul03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Disaster Communication</a> (Wed, 09 Jul 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/whatifred20may03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            What if Red?</a> (Tue, 20 May 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/2003michiganwildfirestatistics25apr03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            2003 Wildfire Stats</a> (Fri, 25 Apr 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/newmsueemergencymanagementwebsite16apr03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            New MSUE Emergency Management Web Site</a> (Wed, 16 Apr 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/wildfire06apr03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Wildfire Media Packet on the Way to MSUE Offices</a> (Sun, 06 Apr 
            2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/protectingfoodsystem18mar03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Protecting Food System</a> (Tue, 18 Mar 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/threatconditionlowered27feb03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Threat Condition Lowered</a> (Thu, 27 Feb 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/whotocontact21feb03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Who to Contact</a> (Fri, 21 Feb 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/end11feb03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Exotic Newcastle Disease</a> (Tue, 11 Feb 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/columbia03feb03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Columbia</a> (Mon, 03 Feb 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/westnilevirus20jan03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            West Nile Virus</a> (Mon, 20 Jan 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/additioninfoonportablegenerators13jan03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Additional Information About Portable Generators</a> (Mon, 13 Jan 
            2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/portablegeneratorspart213jan03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Portable Generators Part 2</a> (Mon, 13 Jan 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/portablegeneratorspart102jan03.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Portable Generators Part 1</a> (Thu, 02 Jan 2003)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/riverice15dec02.doc" onclick="window.open(this.href,'_blank');return false;"> 
            River Ice</a> (Sun, 15 Dec 2002)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/drivewayaccess06dec02.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Driveway Access</a> (Fri, 06 Dec 2002)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/shut-offs19nov02.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Shut-Offs</a> (Tue, 19 Nov 2002)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/agrisecurity04nov02.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Agrisecurity</a> (Mon, 04 Nov 2002)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/appresolved23sep02.doc" onclick="window.open(this.href,'_blank');return false;"> 
            App Resolved</a> (Mon, 23 Sep 2002)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/hstraining18sep02.doc" onclick="window.open(this.href,'_blank');return false;"> 
            HS Training</a> (Wed, 18 Sep 2002)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/msueand9-1111sep02.doc" onclick="window.open(this.href,'_blank');return false;"> 
            MSU and 9/11</a> (Wed, 11 Sep 2002)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/completeurl19jul02.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Complete URL</a> (Fri, 19 Jul 2002)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/nationalextensionstaffsurvey18jul02.doc" onclick="window.open(this.href,'_blank');return false;"> 
            National Extension Staff Survey</a> (Thu, 18 Jul 2002)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/firewise12jul02.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Firewise</a> (Fri, 12 Jul 2002)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/givingblood27jun02.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Giving Blood</a> (Thu, 27 Jun 2002)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/imagine02jun02.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Imagine</a> (Sun, 02 Jun 2002)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/Small%20Pox.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Small Pox</a> (Tue, 21 May 2002)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/Tornado%20-%20Part%20IV.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Tornados Part 4</a> (Wed, 15 May 2002)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/tornados-partiii12may02.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Tornados Part 3</a> (Sun, 12 May 2002)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/Tornados%20-%20Part%20II.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Tornadoes Part 2</a> (Thu, 09 May 2002)</li>
          <li><a href="http://www.msue.msu.edu/msue/emergency/EM%20Tips/tornados-parti07may02.doc" onclick="window.open(this.href,'_blank');return false;"> 
            Tornadoes Part 1</a> (Tue, 07 May 2002)</li>
        </ul>
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Here's the relevant CSS:
HTML Code:
/* 1-Minute Tips Section */

div#oneminutearea {
	background-image: url(images/1minuteback.jpg);
	background-repeat: no-repeat;
	position: relative;
	z-index: 1;
	}
	
h2#oneminhead {
	position: relative;
	z-index: -1;
	}
Any help is appreciated, thanks!