Positsioning errors

[sass]

Hello.

I have two webpages with identical php code in the same server (PHP 5.4). I have a problem with picture and logo text positioning.
IE versions get the diffrent idea of the positions, I have madethe browser detection and I set the positions for each IE version.
Now there is a problem with IE. The pictures are fine one day, but the next day IE displays the pictures diffrently on each page..
If I set the file position with pixels in style file then it shows them correctly. Problem is - both webpages are in the same server, the code is identical,
I use the same computer and IE8 to watch the pages, I erase the temp and refresh and it still shows them differently.
How can it be? Can a faulty php code cause this?
 

Positioning code is as follows:

</style><?php if($browser == 'ie' || $browser == 'ie6' || $browser == 'ie7' || $browser == 'ie8') { ?><style>
#logo1{position:Relative;left:3px;top:-26px;witdh:340px;z-index:-1;}
#logo2{position:absolute;right:13px;top:-2px;witdh:700px;}
#text3 { z-index:4; position: Absolute; top:65px;left: 100px;}
.all_site {position: Relative; top: -27px; left: 0px;    height:    92%;}

 

Another site i must use for same positsins:

 

</style><?php if($browser == 'ie' || $browser == 'ie6' || $browser == 'ie7' || $browser == 'ie8') { ?><style>
#logo1{position:Relative;left:3px;top:-7px;witdh:340px;z-index:-1;}
#logo2{position:absolute;right:13px;top:-2px;witdh:700px;}
#text3 { z-index:4; position: Absolute; top:65px;left: 100px;}
.all_site {position: Relative;    top: -8px; left: 0px;    height:    92%;}

 

for browser detection I use:

else if(strpos(strtolower($_SERVER["HTTP_USER_AGENT"]),strtolower("MSIE 8."))){$browser="ie8";}

 

index.php starts as below:

<?php
session_start();
include "connect.php";
include "pages.php";
include "style.php";
echo '<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js" type="text/javascript" language="Javascript"></script>';
echo '<script src="msg.js" type="text/javascript" language="Javascript"></script>';
$logo1 = mysql_query("SELECT * FROM system WHERE name='page_title'");
$logo=mysql_fetch_assoc($logo1);
echo '<title>'.$logo['value'].'</title>';
if($_SESSION['ID'] != "") {
$user1 = mysql_query("SELECT * FROM users WHERE ID='".$_SESSION['ID']."'");
$user=mysql_fetch_assoc($user1);
}
$logo1 = mysql_query("SELECT * FROM system WHERE name='page_title'");
$logo=mysql_fetch_assoc($logo1);
echo '<img id="logo2" src="img/logo2.gif">';
echo '<span id="text3"><h3>'.$logo['value'].'</h3></span>';
echo '<div class="logo">';
echo '<img id="logo1" src="img/logo1.gif" width="340" height="90">';
echo '</div>';
echo '<center>';
echo '<table border="0" width="100%" class="all_site">';
if($user['ID'] == "") {
  echo '<td colspan="2" style="height: 1px;">';
} else {
  echo '<td colspan="1" style="height: 1px;">';
}
echo '<div class="menu">';
  echo  '<div style="float:Right; clear:Both;">';
  if($user['ID'] != "") {
  if($user['admin'] == '1') {
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