var browserName = navigator.appName;
var browserVer = parseInt(navigator.appVersion);
var version = "";
var msie4 = (browserName == "Microsoft Internet Explorer"&&browserVer >= 4);
if((browserName == "Netscape"&&browserVer >= 3) || msie4 || browserName == "Konqueror" || browserName == "Opera") {
	version = "n3";
} else {
	version = "n2";
}

function blurLink(theObject) {
	if(msie4) {
		theObject.blur();
	}
}

function decryptCharcode(n, start, end, offset) {
	n = n + offset;
	if(offset > 0&&n > end) {
		n = start + (n - end - 1);
	} else if(offset < 0&&n < start) {
		n = end - (start - n - 1);
	}
	return String.fromCharCode(n);
}

function decryptString(enc, offset) {
	var dec = "";
	var len = enc.length;
	for(var i = 0; i < len; i++) {
		var n = enc.charCodeAt(i);
		if(n >= 0x2B && n <= 0x3A) {
			dec += decryptCharcode(n, 0x2B, 0x3A, offset);  // 0-9 . , - + / :
		} else if(n >= 0x40 && n <= 0x5A) {
			dec += decryptCharcode(n, 0x40, 0x5A, offset); // A-Z @
		} else if(n >= 0x61 && n <= 0x7A) {
			dec += decryptCharcode(n, 0x61, 0x7A, offset); // a-z
		} else {
			dec += enc.charAt(i);
		}
	}
	return dec;
}

function linkTo_UnCryptMailto(s) {
	location.href = decryptString(s, 1);
}

function linkTo_CryptMailto(s) {
	location.href = decryptString(s, -1);
}

function form_CryptMailto(n) {
	document.FormCoder.email_enc.value = decryptString(document.FormCoder.email_dec.value, -1);
}
function form_UnCryptMailto(n) {
	document.FormCoder.email_dec2.value = decryptString(document.FormCoder.email_enc2.value, 1);
}

//javascript:linkTo_UnCryptMailto('lzhksn9oztkrZadtsg,gnbgrbgtkd-cd'); //pauls@beuth-hochschule.de
//javascript:linkTo_UnCryptMailto('lzhksn9adtskdqZadtsg,gnbgrbgtkd-cd'); //beutler@beuth-hochschule.de
//																							 Abeuth hochschule-de
//abcdefghijklmnopqrstuvwxyz	-> Verschlüsselt
//bcdefghijklmnopqrstuvwxyza	-> Entschlüsselt