/* @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
          JavaScript Document for Fax From the Web
		  Created:   April 20, 2005   JTD
	      Modified:  April 27, 2005   JTD
		  
		  General Notes:  This Javascript document handles form validations
   @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@  */
   
   
var nbsp = 160;    // non-breaking space char
var node_text = 3; // DOM text node-type
emptyString = /^\s*$/

// -----------------------------------------
//                  trim
// Trim leading/trailing whitespace off string
// -----------------------------------------

function trim(str)
{
  return str.replace(/^\s+|\s+$/g, '')
};

// -----------------------------------------
//                  msg
// Display warn/error message in HTML element
// commonCheck routine must have previously been called
// -----------------------------------------

function msg(fld,     // id of element to display message in
             msgtype, // class to give element ("warn" or "error")
             message) // string to display
{
  // setting an empty string can give problems if later set to a 
  // non-empty string, so ensure a space present. (For Mozilla and Opera one could 
  // simply use a space, but IE demands something more, like a non-breaking space.)
  var dispmessage;
  if (emptyString.test(message)) 
    dispmessage = String.fromCharCode(nbsp);    
  else  
    dispmessage = message;

  var elem = document.getElementById(fld);
  elem.firstChild.nodeValue = dispmessage;  
  
  elem.className = msgtype;
};

// -----------------------------------------
//            commonCheck
// Common code for all validation routines to:
// (a) check for older / less-equipped browsers
// (b) check if empty fields are required
// Returns true (validation passed), 
//         false (validation failed) or 
//         proceed (don't know yet)
// -----------------------------------------

var proceed = 2;  

function commonCheck    (vfld,   // element to be validated
                         ifld,   // id of element to receive info/error msg
                         reqd)   // true if required
{
  if (!document.getElementById) 
    return true;  // not available on this browser - leave validation to the server
  var elem = document.getElementById(ifld);
  if (!elem.firstChild)
    return true;  // not available on this browser 
  if (elem.firstChild.nodeType != node_text)
    return true;  // ifld is wrong type of node  

  if (emptyString.test(vfld.value)) {
    if (reqd) {
      msg (ifld, "error", "Required");  
      vfld.focus();
      return false;
    }
    else {
      msg (ifld, "warn", "");   // OK
      return true;  
    }
  }
  return proceed;
}

// -----------------------------------------
//            validateStrText
// Validate if something has been entered
// Returns true if so 
// -----------------------------------------

function validateStrText(vfld,   // element to be validated
                         ifld )  // id of element to receive info/error msg
{
  var stat = commonCheck (vfld, ifld, true);
  if (stat != proceed) return stat;

  msg (ifld, "error", "");  
  return true;
};

// -----------------------------------------
//               validateEmail
// Validate if e-mail address
// Returns true if so (and also if could not be executed because of old browser)
// -----------------------------------------

function validateContact_Email  (vfld,   // element to be validated
                         ifld,   // id of element to receive info/error msg
                         reqd)   // true if required
{
  var stat = commonCheck (vfld, ifld, reqd);
  if (stat != proceed) return stat;

  var tfld = trim(vfld.value);  // value of field with whitespace trimmed off
  var email = /^[^@]+@[^@.]+\.[^@]*\w\w$/
  if (!email.test(tfld)) {
    msg (ifld, "error", "ERROR: not a valid e-mail address");
    vfld.focus();
    return false;
  }

  var email2 = /^[A-Za-z][\w.-]+@\w[\w.-]+\.[\w.-]*[A-Za-z][A-Za-z]$/
  if (!email2.test(tfld)) 
    msg (ifld, "warn", "Unusual e-mail address - check if correct");
  else
    msg (ifld, "warn", "");
  return true;
};


// -----------------------------------------
//            validatePhone
// Validate telephone number
// Returns true if so (and also if could not be executed because of old browser)
// Permits spaces, hyphens, brackets and leading +
// -----------------------------------------

function validatePhone  (vfld,   // element to be validated
                                     ifld,   // id of element to receive info/error msg
                                     reqd)   // true if required
{
  var stat = commonCheck (vfld, ifld, reqd);
  if (stat != proceed) return stat;

  var tfld = trim(vfld.value);  // value of field with whitespace trimmed off
  var Contact_HomePhone = /^\+?[0-9 ()-]+[0-9]$/
  if (!Contact_HomePhone.test(tfld)) {
    msg (ifld, "error", "ERROR: not a valid telephone number. Characters permitted are digits, space ()- and leading +");
    vfld.focus();
    return false;
  }

  var numdigits = 0;
  for (var j=0; j<tfld.length; j++)
    if (tfld.charAt(j)>='0' && tfld.charAt(j)<='9') numdigits++;

  if (numdigits<6) {
    msg (ifld, "error", "ERROR: " + numdigits + " digits - too short");
    vfld.focus();
    return false;
  }

  if (numdigits>14)
    msg (ifld, "warn", numdigits + " digits - check if correct");
  else { 
    if (numdigits<10)
      msg (ifld, "warn", "Only " + numdigits + " digits - check if correct");
    else
      msg (ifld, "warn", "");
  }
  return true;
};

// -----------------------------------------
//             validateContact_ZipCode
// We want to just validate zipcode as not empty given the fact taht different countries use 
// different types so function temporaily disabled 
// -----------------------------------------

function validateContact_ZipCode    (vfld,   // element to be validated
                                     ifld,   // id of element to receive info/error msg
                                     reqd)   // true if required
{
  var stat = commonCheck (vfld, ifld, reqd);
  if (stat != proceed) return stat;
  //var Contact_Country

  var tfld = trim(vfld.value);
  var zipRE = /^[0-9]{1,5}$/
  if (!zipRE.test(tfld)) {
    msg (ifld, "error", "Please check zip code");
    vfld.focus();
    return false;
  }
  //set to determine country check (US or Canada)
  // Right now it just checks for at least a 5 place alphanumeric zipcode
  if (tfld.length<5) {
	msg (ifld, "error", "Zipcode may not be accurate");
    return false;
  }
  return true;
};

// -----------------------------------------
//            validateState
// Validate if something other then Please Select State has been chosen
// Returns true if so 
// -----------------------------------------

function validateState(vfld,   // element to be validated
                         ifld )  // id of element to receive info/error msg
{
  var stat = commonCheck (vfld, ifld, true);
  if (stat != proceed) return stat;

 var tfld = trim(vfld.value);
 var State = /Please Select State/
  if (State.test(tfld)) {
	 msg (ifld, "error", "Please Select a State");
	  return false;
 } else {
       msg (ifld, "error", "");  
      return true;
 }
};
// -----------------------------------------
//            validatePassword
// Validate if something has been entered
// Returns true if so 
// -----------------------------------------

function validatePassword(vfld,   // element to be validated
                         ifld,     // id of element to receive info/error msg
						  reqd)    // true if required
{
  var stat = commonCheck (vfld, ifld, true);
  if (stat != proceed) return stat;

  // Right now it just checks for at least a 6 place alphanumeric password
  var tfld = trim(vfld.value);
  if (tfld.length<6) {
	msg (ifld, "error", "Password must be 6 characters");
    return false;
  } else {
      msg (ifld, "warn", "");
	   return true;
  }   
};
function matchPassword(p1, p2, ifld, reqd) {
  if (p2.value != p1.value) {
	msg (ifld, "error", "Password fields must match");
   return false;
  } else {
      msg (ifld, "warn", "");
	   return true;
  }   
};