sending html in emails

[messels]

hey y'all,

i have a form setup where i can plug in a bunch of html and then send it off as an email. it currently works for really simple HTML but as soon as i start plugging in my real style guide and images, it all goes fubar.

here's some code:

<?php

//above this point is for "test emails" to me and the team (view beofre sending to entire group)
elseif(isset($_POST['send_all']))
	{
	  include "youwishyounew.php";
	  $subject = $_POST['subject'];
        //just sending to a small group now for testing but this will ultimately be "everyone" opted in
	 // $get_all_emails = "SELECT * FROM customers WHERE newsletter = '1'";
	 $testing_emails = "SELECT * FROM customers WHERE customers_id = '1' OR customers_id ='2' OR customers_id ='6570'";
	 ///testing purposes only:::  

	  $all_email_query = mysql_query ($testing_emails);
	  //$all_email_query = mysql_query ($get_all_emails);
	  //test query
	  if (!$all_email_query)
	  {  echo mysql_error();  }
	  //create email list
	  $int = 0;
	  while ($results = mysql_fetch_array($all_email_query, MYSQL_ASSOC))
	  {  //first check to see if html or text email; then set to approriate type, $int is used to count # of times through loop (i.e. total entries)
		$email_type = $results['customers_email_format'];
		if ($email_type == "HTML")	
	  	{
		$html_email .= $results['customers_email_address'];
		$html_email .= ",";
		}
		if ($email_type == "TEXT")
		{
		$text_email .= $results['customers_email_address'];
		$text_email  .= ",";
		}
		$int++;
	  }//end of while
	  echo "html_email list: $html_email <br /> --- <br /> text_email list: $text_email <br />";
	  $html_email .= "[e-mail]";
	  $text_email .= "[e-mail]";
	  $total_sent = $int;
	  echo "total emails sent: $total_sent <br />";
	  $to="";
	  $from="[e-mail]";
  	  $html_message = $_POST['html_message'];
  	  $text_message = $_POST['text_message'];
  	  $html_message .= "<br /><p>To opt out from these emails, <a href=\"http://whateversiteiwant.com/index.php?main_page=unsubscribe\">click here </a></p>";
 	  $text_message .= "<br /><p>To opt out from these emails, <a href=\"http://whateversiteiwant.com/index.php?main_page=unsubscribe\">click here </a></p>";	  

  	  $headers = "FROM: $from\r\n";
	  $headers .= "MIME-Version: 1.0\r\n";
	  $headers .= "Content-type: text/html; charset=iso-8859-1";
	  $html_headers .= $headers."\r\nBCC: $html_email\r\n";
	  $text_headers .= $headers."\r\nBCC: $text_email\r\n";
	  if (!mail($to, $subject, $html_message, $html_headers))
	  { $admin_message = "didn't work; oops. <br />";  }
	  else {  

	  mysql_close(); //close current connection to customer CMS, open connection to other db to update newsletter logs
	  include "database.inc.php";
	  $admin_message .= "email sent.  hope you tested it first.  ;-) <br />"; 
	  $insert_message = "INSERT INTO newsletters (html_message, text_message, total_sent, type) VALUES ('$html_message', '$text_message', '$total_sent', 'everyone')";
	  $insert_message_query = mysql_query($insert_message);
			if(!$insert_query)
		 { echo mysql_error(); }
	}//end of else from mail ()
	//email the text only bunch
	if (!mail($to, $subject, $text_message, $text_headers))
	{ $admin_message .="<br /> text version did not send<br />"; }
	else 
	{$admin_message .="<br /> text version sent <br />"; }
	//end of mail (text)
	  mysql_close ();		  //close any open connections

}//end of $_POST['send_all']

?>

i've attached a screenshot of the funky output (as viewed in google mail)

thx!!!