function crml()
{
var sub = "?subject=Madarsko";
var domain = "reh" +'urek.cz';
var name = "mad" +'arsko';
var at = "@";

document.write("<a href='m&#97;" +"&#105;lt&#111;:" +name +'' +at +"" +domain +sub +"'>" +name +"" +at +'' +domain +"</a>"); 
}
crml();