<?php
// MailCrypter class
// Written by: Pablo Gazmuri on July 23, 2002
// This class writes scrambled mailto: links,
// keeping email addresses invisible to email
// harvesting programs.
// NOTE: Only tested in IE and Netscape 6
class MailCrypter{
var $links;
//this function adds a link and returns the scrambled link text
function addMailTo($address, $addlAttributes = ""){
$new = "";
$this->links[] = $address;
for($i=0;$i<strlen($address);$i++){
$new .= chr(ord(substr($address, $i, 1)) - 1);
}
return "<a id=\"link".(count($this->links)-1)."\" href=\"mailto:$new\" $addlAttributes >$new</a>";
}
//this function echos the javascript code to descramble the links
function writeScript(){
echo "\n\n<script language=\"JavaScript\">
<!--hide from older browsers\n";
echo "
function ConvLink(link){
var temp='';
var i;
for(i =0;i<link.href.length;i++){
if (i>6){
temp = temp + String.fromCharCode(link.href.charCodeAt(i)+1);
}else{
temp = temp + link.href.charAt(i);
}
}
link.href = temp
link.innerHTML = temp.substring(7);
}\n";
for($i=0; $i<count($this->links);$i++){ echo "
ConvLink(document.getElementById('link$i'));\n";}
echo "-->\n</script>";
}
}
?>
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