function goodEmail(s){
                var validEmailExt = new Array("info","aero","museum","name");
                var pat = new RegExp("^(\\w|-|\\.)+@(\\w|-|\\.)+\\.\\w{2,3}$") ;
                patmatch = pat.test(s);
                if(patmatch)
                        {return true;}
                else
                        {
                        for(a=0;a<validEmailExt.length;a++)
                                {
                                pat.compile("^(\\w|-|\\.)+@(\\w|-|\\.)+\\."+ validEmailExt[a] +"$");
                                patmatch = pat.test(s);
                                if(patmatch)
                                        {return true;}
                                else
                                        {continue;}
                                }
                        }
                return false;
        }

        function verify(f){
                var sendemail = f.sendemail.value;
                var r_email = f.r_email.value;
                var msg = "Please enter:\n";
                var msgFlag =0;

                if (!(goodEmail(sendemail))) {msg += " -your valid email address\n"; msgFlag=1;}
                if (!(goodEmail(r_email))) {msg += " -the recipient's valid email address\n"; msgFlag=1;}

                if (msgFlag == 1) { alert(msg); return false; }

                return true;

        }