function verify(form) { 
        if (form["telephone"].value == '') { 
                alert("Please enter your phone number."); 
                return false; 
        } 
        var j = new RegExp(); 
        j.compile("[0-9]{3}-[0-9]{3}-[0-9]{4}"); 
        if (!j.test(form["telephone"].value)) { 
                alert("Your phone number must be in the format 555-555-5555."); 
                return false; 
        } 
        return true; 
}