Improving the css a little, noticed this issue when using monitor with less width.

shop_log_iframe.php

@@ -193,7 +193,7 @@ if ((isset($_POST["MM_insert"])) && ($_POST["MM_insert"] == "FormEdit")) {
           
    <br /><br />
           
-   <table  id="shop_log" width="relative" style="margin-left:80px" border="1" cellpadding="10" cellspacing="0" bordercolor="#CCCCCC">
+   <table  id="shop_log" width="relative" style="margin:auto" border="1" cellpadding="10" cellspacing="0" bordercolor="#CCCCCC">
      <tbody>     
 	  <tr valign="bottom" bordercolor="#CCCCCC">
 	    <td height="25" colspan="1" bgcolor="#99CC33">Existing Shop Users</td>

start_shop.php

@@ -113,7 +113,7 @@ if ((isset($_POST["MM_insert"])) && ($_POST["MM_insert"] == "ChangeDate")) {
 ?>
 <?php include("include_header_shop.html"); ?>
 
-	    <table style="margin-left:170px">
+	    <table style="margin:auto">
 
         <tr valign="top">
           <td align="left"><span class="yb_heading3red"><?php echo $error_message; ?></span> </td>