function isName(nval){   

        var str = nval.value;   

                        

        // Return false if name field is blank.   

        if (str == ""){      

                       alert("NAME field is blank.\n\nPlease enter your name.")      

                       nval.focus();      

                       return false;      

                        }   

                        

       // Return false if characters are not a-z, A-Z, or a space.   

       for (var i = 0; i < str.length; i++){      

       var ch = str.substring(i, i + 1);      

        if (((ch < "a" || "z" < ch) && (ch < "A" || "Z" < ch)) && ch != ' '){         

        alert("\nThe NAME field only accepts letters & spaces.\n\nPlease re-enter your name.");         

        nval.select();         

        nval.focus();         

        return false;         

                                }      

                        }   

                       return true;   

                }



function isEmail(eval,fmsg){   

// Return false if e-mail field is blank.   

        if (eval.value == ""){      

        alert(fmsg+" field is blank.\n\nPlease enter it.");      

        eval .focus();      

        return false;       

        }   


// Return false if e-mail field does not contain a '@' and '.' .   

if (eval.value.indexOf ('@',0) == -1 ||eval.value.indexOf ('.',0) == -1)

{      

alert("\nPlease enter a valid e-mail address.")      

eval.select();      

eval.focus();    

return false;      

}   


else {                                      

return true;      

                        }   

                }