function decrypt(crypted_mail,key)
{
     var len=crypted_mail.length;
     var clear_mail="";
     for(var i=0;i<len;i++)
     {
        clear_mail = clear_mail + String.fromCharCode(crypted_mail.charCodeAt(i) - key);
     }
     location.href=clear_mail;
}

function decryptAndReturn(crypted_mail,key)
{
     var len=crypted_mail.length;
     var clear_mail="";
     for(var i=0;i<len;i++)
     {
        clear_mail = clear_mail + String.fromCharCode(crypted_mail.charCodeAt(i) - key);
     }
     return clear_mail;                     
}