function  prepareMail(id,text){
	el = document.getElementById(id);
	text=caeserEncrypt(text,23);
	el.innerHTML=text;
	el.href="mailto:"+text;
}


function caeserEncrypt(x, shf) {
	abc = "abcdefghijklmnopqrstuvwxyz@.";
	ABC = "abcdefghijklmnopqrstuvwxyz@.";
	r1 = "";
	r2 = "";
	shf = eval(shf);
	for (i = 0; i < x.length; i++) {
		let = x.charAt(i);
		pos = ABC.indexOf(let);
		if (pos >= 0) {
			r1 += ABC.charAt((pos + shf) % 28);
		} else {
			r1 += let;
		}
		;
	}
	;
	for (i = 0; i < r1.length; i++) {
		let = r1.charAt(i);
		pos = abc.indexOf(let);
		if (pos >= 0) {
			r2 += abc.charAt((pos + shf) % 28);
		} else {
			r2 += let;
		}
		;
	}
	;
	return r2;
};