Secure form Mailer

/* COLOR/BORDERS CSS */
form.ddfm h1,
form.ddfm h2 {
 color: #606060;
}
form.ddfm legend, 
form.ddfm label, 
form.ddfm label.fmtextlblwide {
 color: #606060;
}
form.ddfm .fmcheck p, 
form.ddfm .fmradio p,
form.ddfm textarea, 
form.ddfm .fmfullblock, 
form.ddfm .fmhalfblock, 
form.ddfm .fmselect, 
form.ddfm input.fmtext,
form.ddfm input.fmverify,
form.ddfm textarea.fmtextwide,
form.ddfm .submit,
form.ddfm .credits {
 color: #404040;
}
form.ddfm .required {
 color: #FF0000;
}
.ddfmerrors {
 color: #FF0000;
}
/* TEXT CSS */
form.ddfm {
 font-size: 100%;
 font-family: Arial, Helvetica, sans-serif;
}
form.ddfm h1,
form.ddfm h2 {
 font-family: Arial, Helvetica, sans-serif;
 text-align: left;
 margin: 0 0 10px 0;
 padding: 0;
}
 
form.ddfm h1 {
 font-size: 140%;
}
form.ddfm h2 {
 font-size: 115%;
}
form.ddfm legend, 
form.ddfm label, 
form.ddfm label.fmtextlblwide {
 font-weight: bold;
}
form.ddfm .credits {
 font-size: 90%;
}
form.ddfm legend {
 font-size: 110%;
}
.ddfmerrors {
 font-weight: bold;
}
 
 
/* STRUCTURE CSS */
.ddfmwrap {
 margin: 15px auto 15px auto;
 width: 370px; 
}
form.ddfm {
 text-align: left;
 padding: 15px;
 width: 350px; 
}
form.ddfm fieldset {
 padding: 0 10px 2px 10px;
 margin: 0 0 13px 0;
 display: block;
}
form.ddfm legend {
 padding: 0 6px 0 6px;
 margin: 0 0 0 10px;  
}
form.ddfm label {
 display: block; 
 float: left; 
 width: 18%; 
 text-align: right;
 margin: 0 10px 0 0; 
 padding-bottom: 15px;  
}
form.ddfm label.fmtextlblwide {
 display: block;  
 float: left; 
 text-align: left;
 margin: 0 10px 0 1px; 
 padding-bottom: 8px; 
}
form.ddfm select.fmselect {
 float: left; 
 display: block;
 width: 75%; 
 margin-bottom: 15px;  
 padding: 3px; 
}
form.ddfm .fmcheck {
 width: 75%; 
 float: left;
 display: block;  
 margin-bottom: 15px;
}
form.ddfm .fmradio {
 width: 75%;
 float: left;
 display: block;
 margin-bottom: 15px;
}
form.ddfm .fmcheck p {
 padding: 0;
 margin: 0 0 5px 0;
 line-height: 140%;
}
form.ddfm .fmradio p {
 padding: 0;
 margin: 0 0 5px 0;
 line-height: 140%;
}
form.ddfm textarea {
 float: left; 
 position: relative;
 width: 75%;
 margin-bottom: 15px;
 padding: 3px;
}
form.ddfm br {
 clear: left;  
}
form.ddfm .fmfullblock {
 padding-left: 0px;
}
form.ddfm .fmhalfblock {
 margin-left: 18%;
 width: 75%;
}
form.ddfm input.fmverify {
 float: left;
 display: block;
 width: 22%;
 margin-bottom: 15px; 
 padding: 3px;
}
form.ddfm img {
 margin: 1px 0 0 10px; 
}
form.ddfm input.fmfile,
form.ddfm input.fmtext {
 float: left; 
 display: block;
 width: 75%;
 margin-bottom: 15px;  
 padding: 3px;
}
form.ddfm textarea.fmtextwide {
 display: block;
 float: left;
 width: 90%;
 margin-right: 2px;
 margin-bottom: 15px; 
 padding: 3px;
}
form.ddfm .credits {
 text-align: right;
 margin-top: 5px;
}
form.ddfm .submit {
 margin-top: 15px;
 text-align: right;
 position: relative;

<fieldset class="options"> 
 <legend>Image Verification</legend>
 <table width="100%" border="0" cellspacing="0" cellpadding="6">
 <tr valign="top"><td width="25%" align="right">
  <b>Enable image verification</b>
 </td><td align="left">
  <input type="checkbox" name="verify_enable" value="checkbox" <?php echo (get_option('ddfm_verify_enable')) ? 'checked="checked" ' : ''; ?>/>
  &nbsp;<i>Require users to type in a verification code to send email (requires the GD library)</i>
 </td></tr>
 <tr valign="top"><td width="25%" align="right">
  <b>Verification image background</b>
 </td><td align="left">
  <input name="verify_background" type="text" size="8" value="<?php echo trim(get_option('ddfm_verify_background')); ?>" />
  <br /><i>Hex color code for verification image background</i>
 </td></tr>
 <tr valign="top"><td width="25%" align="right">
  <b>Verification image text</b>
 </td><td align="left">
  <input name="verify_text" type="text" size="8" value="<?php echo trim(get_option('ddfm_verify_text')); ?>" />
  <br /><i>Hex color code for verification image text</i>
 </td></tr>
 </table>
 </fieldset>
 <div class="submit">
  <input type="submit" name="set_defaults" value="<?php _e('Load Default Options'); ?> &raquo;" />
  <input type="submit" name="info_update" value="<?php _e('Update options'); ?> &raquo;" />
 </div>
 </form>
 </div>
 <?php
}