////////////////////////////////////////////////////////////////////////////////
// main function:
// check complete form for errors. 
////////////////////////////////////////////////////////////////////////////////
function checkWholeForm(theForm) {
    var why = "";

    // order to be same as on the origin form
    why += isEmpty(theForm.company.value, theForm.company.id);
    why += checkDropdown(theForm.title.selectedIndex, theForm.title.id);
    why += isEmpty(theForm.firstname.value, theForm.firstname.id);        
    why += isEmpty(theForm.lastname.value, theForm.lastname.id);
    why += isEmpty(theForm.street.value, theForm.street.id);
    why += isEmpty(theForm.zip.value, theForm.zip.id);
    why += isEmpty(theForm.city.value, theForm.city.id);
    why += checkDropdown(theForm.country.selectedIndex, theForm.country.id);
    why += isEmpty(theForm.sales_office.value, theForm.sales_office.id);
    why += checkPhone(theForm.phone.value);                    
    why += checkEmail(theForm.email.value);
    why += isEmpty(theForm.application_area.value, theForm.application_area.id);
    
    /////////////////////////////////////////////////    
    // radios            
    /////////////////////////////////////////////////
    /*
    for (i=0, n=theForm.radio_softune.length; i<n; i++) {
        if (theForm.radio_softune[i].checked) {
            var checkvalue = theForm.radio_softune[i].value;
            break;
        } 
    }
    why += checkRadio(checkvalue);
    */
    

    /////////////////////////////////////////////////    
    // OUTPUT (alert popup - list of errors)    
    /////////////////////////////////////////////////
    if (why != "") {
       alert(why);
       return false;
    }
    /////////////////////////////////////////////////    
    // optional (not active)    
    /////////////////////////////////////////////////
    //why += checkPassword(theForm.password.value);
    //why += checkUsername(theForm.username.value);
    //why += isDifferent(theForm.different.value);
    /////////////////////////////////////////////////    
return true;
}

////////////////////////////////////////////////////////////////////////////////
// e-mail
////////////////////////////////////////////////////////////////////////////////
function checkEmail (strng) {
var error="";
if (strng == "") {
   error = "- You didn't enter an email address.\n";
}

    var emailFilter=/^.+@.+\..{2,3}$/;
    if (!(emailFilter.test(strng))) { 
       error = "- Please enter a valid email address.\n";
    }
    else {
//test email for illegal characters
       var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/
         if (strng.match(illegalChars)) {
          error = "- The email address contains illegal characters.\n";
       }
    }
return error;    
}

////////////////////////////////////////////////////////////////////////////////
// phone number - strip out delimiters and check for 10 digits
////////////////////////////////////////////////////////////////////////////////
function checkPhone (strng) {
var error = "";
if (strng == "") {
   error = "- You didn't enter a phone number.\n";
}

var stripped = strng.replace(/[\(\)\.\-\ \+]/g, ''); //strip out acceptable non-numeric characters
    if (isNaN(parseInt(stripped))) {
       error = "- The phone number contains illegal characters.\n";
  
    }    
    if (stripped.length < 10) {
	     error = "- The phone number is the wrong length. Make sure you included an area code.\n";
    }     
return error;
}


////////////////////////////////////////////////////////////////////////////////
// non-empty textbox
////////////////////////////////////////////////////////////////////////////////
function isEmpty(strng, id) {
var error = "";
  if (strng.length == 0) {
     error = "- The mandatory text area '" + id + "' has not been filled in.\n"
  }
return error;	  
}


////////////////////////////////////////////////////////////////////////////////
// valid selector from dropdown list
////////////////////////////////////////////////////////////////////////////////
function checkDropdown(choice, id) {
var error = "";
    if (choice == 0) {
    error = "- You didn't choose an option from the drop-down list '" + id + "'.\n";
    }    
return error;
}

////////////////////////////////////////////////////////////////////////////////
// exactly one radio button is chosen
////////////////////////////////////////////////////////////////////////////////
/*
function checkRadio(checkvalue) {
var error = "";
   if (!(checkvalue)) {
       error = "- Please check a radio button.\n";
    }
return error;
}
*/
    
////////////////////////////////////////////////////////////////////////////////
// password - between 6-8 chars, uppercase, lowercase, and numeral
////////////////////////////////////////////////////////////////////////////////
/*
function checkPassword (strng) {
var error = "";
if (strng == "") {
   error = "- You didn't enter a password.\n";
}

    var illegalChars = /[\W_]/; // allow only letters and numbers
    
    if ((strng.length < 6) || (strng.length > 8)) {
       error = "- The password is the wrong length.\n";
    }
    else if (illegalChars.test(strng)) {
      error = "- The password contains illegal characters.\n";
    } 
    else if (!((strng.search(/(a-z)+/)) && (strng.search(/(A-Z)+/)) && (strng.search(/(0-9)+/)))) {
       error = "- The password must contain at least one uppercase letter, one lowercase letter, and one numeral.\n";
    }  
return error;    
}    
*/
////////////////////////////////////////////////////////////////////////////////
// username - 4-10 chars, uc, lc, and underscore only.
////////////////////////////////////////////////////////////////////////////////
/*
function checkUsername (strng) {
var error = "";
if (strng == "") {
   error = "- You didn't enter a username.\n";
}


    var illegalChars = /\W/; // allow letters, numbers, and underscores
    if ((strng.length < 4) || (strng.length > 10)) {
       error = "- The username is the wrong length.\n";
    }
    else if (illegalChars.test(strng)) {
    error = "- The username contains illegal characters.\n";
    } 
return error;
}       
*/
////////////////////////////////////////////////////////////////////////////////
// was textbox altered
////////////////////////////////////////////////////////////////////////////////
/*
function isDifferent(strng) {
var error = ""; 
  if (strng != "Can\'t touch this!") {
     error = "- You altered the inviolate text area.\n";
  }
return error;
}
*/