function encrypt(a, b, c, d) { 
//<![CDATA[ 

	//Eerste deel van het e-mail adres invullen vb. info 
	var user = a; 

	//Tweede deel van het adres vb. jeugdwerknet.be 
	var domain = b; 

	//The flag has to be set 
	if (typeof(c)=='undefined') { 
		var flag = true; 
		var text = ''; 
	} else { 
		var flag = false; 
		var text = c; 
	} 

	if (typeof(d)!='undefined') { 
		var showAddress = true; 
	} 

	//Schrijf het resultaat 

	//if true dan is de HTML code zo <a href="mailto:....">address</a> 
	//if false dan is de HTML code zo <a href="mailto:....">param d</a> 
	if(flag==true) { 
		document.write('<a href="mailto:' + user + '@' + domain + '">'); 
		document.write(user + '@' + domain + '</a>'); 
	} else { 
		if(showAddress == true){
			document.write('<a href="mailto:' + text + '<' + user + '@' + domain + '>">'); 
			document.write(user + '@' + domain + '</a>'); 
		}else{
			document.write('<a href="mailto:' + text + '<' + user + '@' + domain + '>">'); 
			document.write(text + '</a>'); 
		}
	} 

//]]> 
}