function writemail(hostname,username,linktext,mode) {
  if (hostname.length > 0) {
          mail_to="mail" + "to:" + username + "@" + hostname;
          if (mode==0) {  
                  (linktext.length > 0)?document.write("<a href=" + mail_to + ">" + linktext + "</a>"):document.write("<a href=" +  mail_to + ">" + username + ""+"@" + hostname
 +"" + "</a>"); 
          }
          else { document.location.replace(mail_to); }
  }
}

function alternate(id){
 if(document.getElementsByTagName){  
   var table = document.getElementById(id);  
   var rows = table.getElementsByTagName("tr");  
   for(i = 0; i < rows.length; i++){          
 //manipulate rows
     if(i % 2 == 0){
       rows[i].className = "even";
     }else{
       rows[i].className = "odd";
     }      
   }
 }
}