function isdefined(variable)
{
    return (typeof(window[variable]) == "undefined")? false: true;
}

var cerospam_site = "http://www.cerospam.com.ar/";
var cerospam_image = "image.php?cerospam_form="+cerospam_form;
if (isdefined('cerospam_background')) cerospam_image = cerospam_image+'&cerospam_background='+cerospam_background;
if (isdefined('cerospam_width')) cerospam_image = cerospam_image+'&cerospam_width='+cerospam_width;

document.write('<img src="'+cerospam_site+cerospam_image+'" border="0" title="Cerospam.com.ar security code"><br clear="all">');
//document.write('<img src="'+'http://www.cerospam.'+'com.ar/'+'image.php?cerospam_form='+cerospam_form+'" border="0" title="Cerospam.com.ar security code"><br clear="all">');
document.write('<a href="http://www.cerospam.com.ar" id="cerospamlink" style="font-family:Verdana; font-size:10px; color:#454545;" target="_blank" title="security by Cero Spam">security by Cero Spam</a>');
document.write('<input type="hidden" name="cerospam_referer" value="'+location.href+'">');
document.write('<input type="hidden" name="cerospam_client" value="'+cerospam_client+'">');
document.write('<input type="hidden" name="cerospam_form" value="'+cerospam_form+'">');