function mask(email,mailto) {
var mask="";
if (email=="" || email.charAt(0)==" " || email.search("@")=="-1" || email.search(".")=="-1") return("Keine gültige E-Mail-Adresse angegeben!");
else {
email=email.toLowerCase();
for(count=0;count<email.length;count++) {
code=email.charCodeAt(count); if (code<100) code = "0" + code;
else String(code);
mask+="&#" + code + ";";}
if (mailto==true) mask="&#109;&#097;&#105;&#108;&#116;&#111;&#058;" + mask
return(mask);
}}