Topic awaiting preservation: php email form

<?php
	$form_info="<form method=\"post\" action=\"$_server[php_self]\">
	Please fill out the required fields below  then click the submit button.<br /><br />
	<table>
		<tr>
			<td><strong>Name of Borrower:</strong></td>
			<td><input type=\"text\" name=\"borrower_name\" value=\"$_post[borrower_name]\" size=30></td>
		
		</tr>
	
		<tr>
			<td><strong>Name of Client (Lender):</strong></td>
			<td><input type=\"text\" name=\"client_name\" value=\"$_post[client_name]\" size=30></td>
		</tr>
	
		<tr>
			<td><strong>Attention:</strong></td>
			<td><input type=\"text\" name=\"attention\" value=\"$_post[attention]\" size=30></td>
		</tr>
	
		<tr>
			<td><strong>Subject Address:</strong></td>
			<td><input type=\"text\" name=\"subject_address\" value=\"$_post[subject_address]\" size=30></td>
		</tr>
	
		<tr>	
			<td><strong>Legal Description:</strong></td>
			<td><textarea name=\"legal_description\" cols=30 rows=5 wrap=virtual>$_POST[legal_description]
			</TEXTAREA></td>
		</tr>

		<tr>
			<td><strong>Access to Property:</strong></td>
			<td><input type=\"text\" name=\"access_property\" value=\"$_post[access_property]\" size=30></td>
		</tr>
	
		<tr>
			<td><strong>Owner of Record:</strong></td>
			<td><input type=\"text\" name=\"owner_record\" value=\"$_post[owner_record]\" size=30></td>
		</tr>
</table>
<input type=\"hidden\" name=\"op\" value=\"ds\">

<p><input type=\"submit\" name\"send\" value=\"submit\"></p>
</form>";
if(!isset($_post['submit']))
	{
	echo "$form_info";
	}
else if(isset($_post['submit']))
	{
	if($_post[borrower_name]=="")
		{
		$name_err="<font color=red>Please enter your name</font><br />";
		$send="no";
		}
	if($_post[legal_description]=="" && $_post[subject_address]=="")
		{
		$legal_err ="<font color=red>Must provide legal description or subject address</font><br />";
		$send="no";
		}
	
	if($send !="no")
		{
		$to ="seymour.adam@gmail.com";
		$subject="Appriasal Order";
		$mailheaders="From: Smith-Parke & Co.<>";
		$msg="$_post[borrower_name]\n";
		mail($to, $subject, $msg, $mailheaders);
		echo "<p><center><h2>Mail has been sent!</h2></center></p>";
		}
	else if ($send=="no"){
echo "$name_err";
echo "$legal_err";
}}
?>