Wordpress pages returning 404, in some cases

I hope this is the correct forum, but there are a few pages on this site that return a 404 error in IE and in some versions of firefox, and I'm open to any suggestions.

I've tried solving this issue with a designer, through wordpress forums, and I did get some help on cre8asite forums, but the problem is still there.

Here are the URLs that return 404 in IE, and some vesions of FF:
http://www.mobilemammoth.com/send-text-message
http://www.mobilemammoth.com/deals
http://www.mobilemammoth.com/mobile-glossary

There are other wp pages on this site that display with no problem, and I cannot figure out why.

Here is the code from the header.php, in case it helps:
(thanks to everyone in advance for any tips!)

<?php
		$pages = BX_get_pages();
		if ($pages) {
			foreach ($pages as $page) {
				$page_id = $page->ID;
   				$page_title = $page->post_title;
   				$page_name = $page->post_name;
                                $page_type = $page->post_type;
   				if ($page_name == "archives") {
   					(is_page($page_id) || is_archive() || is_search() || is_single())?$selected = ' class="selected"':$selected='';
   					echo "<li".$selected."><a href=\"".get_page_link($page_id)."\">Archives</a></li>\n";
   				}
   				elseif($page_name == "send-text-message") {
   					(is_page($page_id))?$selected = ' class="selected"':$selected='';
   					echo "<li".$selected."><a href=\"".get_page_link($page_id)."\">Send SMS</a></li>\n";
   				}
                                elseif($page_name == "deals") {
   					(is_page($page_id))?$selected = ' class="selected"':$selected='';
   					echo "<li".$selected."><a href=\"".get_page_link($page_id)."\">Deals</a></li>\n";
   				}

   				elseif($page_name == "about") {
   					(is_page($page_id))?$selected = ' class="selected"':$selected='';
   					echo "<li".$selected."><a href=\"".get_page_link($page_id)."\">About</a></li>\n";
   				}
   				elseif ($page_name == "contact") {
   					(is_page($page_id))?$selected = ' class="selected"':$selected='';
   					echo "<li".$selected."><a href=\"".get_page_link($page_id)."\">Contact</a></li>\n";
   				}
   				elseif ($page_name == "about_short") {/*ignore*/}
           	 	else {
          		(is_page($page_id))?$selected = ' class="selected"':$selected='';	echo "<li".$selected."><a href=\"".get_page_link($page_id)."\">$page_title</a></li>\n";

PHP:

 

I don't get any errors.

 

Thanks generousape!
Can you tell me what browser and version you used?

 

Problem solved. Issue was with IE looking for a post_status of 'publish' (not static), while wordpress only returns pages with 'static' as post_status by default.
Cheers.