function getEncDate() {
	var jetzt = new Date();
	var sertime=(jetzt.getTime()/60000).toFixed(0);
	var b64 = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_+";
	var enc="";
	while(sertime) {
		enc+=b64.substr(sertime&63,1);sertime>>=5;
	}
	return enc;
}

function warn_ielessthan7() {
	var agt      = navigator.userAgent.toLowerCase();
	var is_major = parseInt(navigator.appVersion);
	var is_ie    = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
	if (is_ie) {
		var ie_ver   = parseFloat(agt.substring(agt.indexOf("msie")+4));
		if (ie_ver<7.0) {
			try {
				document.getElementById("OldIEwarning").style.visibility='visible';
			} catch (e) {}
		}
	}
}

function manipulate_maillinks() {
	for (var i = 0; i < document.links.length; ++i) {
		if (document.links[i].protocol!="mailto:") continue;
		document.links[i].href=document.links[i].href.replace(/-spam@/,"-"+getEncDate()+"@");
		document.links[i].firstChild.data=document.links[i].firstChild.data.replace(/-spam@/,"-"+getEncDate()+"@");
	}
	warn_ielessthan7();
}

window.setTimeout('manipulate_maillinks()',5000)