var An = "office";
         var Dn = "praxis-roemerstrasse";
         var En = "at";
         var LinkText = An + "@" + Dn + "." + En;
         
         function setMailLink() {
           document.open();
           document.write("<a class=\"ibweiter" + "\" href=\"mailto:" + LinkText + "\">" + LinkText + "</a>");
           document.close();
         }
       var An = "office";
         var Dn = "praxis-roemerstrasse";
         var En = "at";
         var LinkText = An + "@" + Dn + "." + En;
         
         function setMailLink2() {
           document.open();
           document.write(LinkText);
           document.close();
         }