// ----------------------------------------------------------------------
// Javascript form validation routines.
// Author: Stephen Poley
//
// Simple routines to quickly pick up obvious typos.
// All validation routines return true if executed by an older browser:
// in this case validation must be left to the server.
//
// Update Aug 2004: have tested that IE 5.0 and IE 5.5 both support DOM model
// sufficiently well, so innerHTML option removed (redundant).
//
// Update Jun 2005: discovered that reason IE wasn't setting focus was
// due to an IE timing bug. Added 0.1 sec delay to fix.
//
// Update Oct 2005: minor tidy-up: unused parameter removed
// ----------------------------------------------------------------------

var nbsp = 160;    // non-breaking space char
var node_text = 3; // DOM text node-type
var emptyString = /^\s*$/
var glb_vfld;      // retain vfld for timer thread

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

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


// -----------------------------------------
//                  setfocus
// Delayed focus setting to get around IE bug
// -----------------------------------------

//function setFocusDelayed()
//{
//  glb_vfld.focus()
//}

//function setfocus(vfld)
//{
  // save vfld in global variable so value retained when routine exits
//  glb_vfld = vfld;
//  setTimeout( 'setFocusDelayed()', 100 );
//}


// -----------------------------------------
//                  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;   // set the CSS class to adjust appearance of message
};

// -----------------------------------------
//            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,
                         rFld)   // 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", "Please enter " + rFld);  
 //     setfocus(vfld);
      return false;
    }
    else {
      msg (ifld, "warn", "");   // OK
      return true;  
    }
  }
  return proceed;
}

// -----------------------------------------
//            commonCheck2
// 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 commonCheck2    (vfld,   // element to be validated
                         ifld,   // id of element to receive info/error msg
                         reqd,
                         rFld)   // 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", rFld);  
 //     setfocus(vfld);
      return false;
    }
    else {
      msg (ifld, "warn", "");   // OK
      return true;  
    }
  }
  return proceed;
}

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

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

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

// -----------------------------------------
//            validatePresent2
// Validate if something has been entered
// Returns true if so 
// -----------------------------------------

function validatePresent2(vfld,   // element to be validated
                         ifld,   // id of element to receive info/error msg
                         rFld )  
{
  var stat = commonCheck2 (vfld, ifld, true,rFld);
  if (stat != proceed) return stat;

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

// -----------------------------------------
//            validatePresent3
// Validate if something has been entered
// into Multi Select Returns true if so 
// -----------------------------------------

function selectedItem ()
{
      for (i = 0; i < document.forms.InfoRequest.Ref2.options.length; i++)
      {
            if (document.forms.InfoRequest.Ref2.options[i].selected)
            {
                  msg ('errRefS', "warning", ""); 
                  return true;
            }
      }

      //alert("SELECT A COLOR!");
	  msg ('errRefS', "error", "How did you hear about us?"); 
      return false; 
}



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

function validateEmail  (vfld,   // element to be validated
                         ifld,   // id of element to receive info/error msg
                         reqd)   // true if required
{
  var stat = commonCheck (vfld, ifld, reqd,"a valid e-mail address");
  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", "Please enter a vaild e-mail address");
 //   setfocus(vfld);
    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, please check if correct.");
  else
    msg (ifld, "warn", "");
  return true;
};


// -----------------------------------------
//            validateTelnr
// 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 validateTelnr  (vfld,   // element to be validated
                         ifld,   // id of element to receive info/error msg
                         reqd)   // true if required
{
  var stat = commonCheck (vfld, ifld, reqd,"a valid phone number");
  if (stat != proceed) return stat;

  var tfld = trim(vfld.value);  // value of field with whitespace trimmed off
  var telnr = /^\+?[0-9 ()-]+[0-9]$/
  if (!telnr.test(tfld)) {
    msg (ifld, "error", "Please enter a valid phone number. Characters permitted are digits, space ()- and leading +,");
 //   setfocus(vfld);
    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<10) {
    msg (ifld, "error", numdigits + " digits is too short for a valid phone number.");
  //  setfocus(vfld);
    return false;
  }

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

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

function validateCheck()  
{
if ((!document.forms.InfoRequest.C1.checked) &&
(!document.forms.InfoRequest.C13.checked) &&
(!document.forms.InfoRequest.C15.checked) &&
(!document.forms.InfoRequest.C2.checked) &&
(!document.forms.InfoRequest.C3.checked) &&
(!document.forms.InfoRequest.C4.checked) &&
(!document.forms.InfoRequest.C8.checked) &&
(!document.forms.InfoRequest.C14.checked) &&
(!document.forms.InfoRequest.C16.checked) &&
(!document.forms.InfoRequest.C9.checked) &&
(!document.forms.InfoRequest.C10.checked) &&
(!document.forms.InfoRequest.C11.checked) &&
(!document.forms.InfoRequest.C6.checked)) {
msg("errcheck","error","Please let us know how you heard about us.") 
return false;
}
else
  msg ("errcheck", "warn", "");  
  return true;
};

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

function validateDrop()  
{
if(document.forms.InfoRequest.Finance.selectedIndex==0)
{
msg("errFinance","error","Please select yes or no.") 
return false;
}
else
  msg ("errFinance", "warn", "");  
  return true;
};

// -----------------------------------------
//            validatecheck2
// Validate if something has been entered
// Returns true if so 
// -----------------------------------------
function validateCheck2(strA,
						strB,
						strC)   // id of element to receive info/error msg
                        
{
if (strA.checked) 

{

validatePresent2(strB, strC, "*");
}
else
  msg ("errcheck", "warn", "");  
  return true;
};

// -----------------------------------------
//            validateCurrency
// Validate if something has been entered
// Returns true if so 
// -----------------------------------------
function validateCurrency(strA, //field to validate
						strB,    //field to get error
						strC)   // error string
                        
{ 
   var temp_value = strA.value; 
   if (temp_value == "") 
   { 
     msg(strB,"error",strC); 
     return false;
   } 
   var Chars = "0123456789.,$"; 
   for (var i = 0; i < temp_value.length; i++) 
   { 
       if (Chars.indexOf(temp_value.charAt(i)) == -1) 
       { 
       	msg(strB,"error","Only numbers, $ , and . are allowed") 
           return false; 
       } 
       msg(strB,"warn","")
       return true;
   } 
} 

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

var numb = '0123456789';
var lwr = 'abcdefghijklmnopqrstuvwxyz';
var upr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
 
function isValid(parm,val) {
  if (parm == "") return true;
  for (i=0; i<parm.length; i++) {
    if (val.indexOf(parm.charAt(i),0) == -1) return false;
  }
  return true;
}

function isAlpha(parm) {return isValid(parm,lwr+upr);}




function validateCity(strA, //field to validate
						strB,    //field to get error
						strC)   // error string
                        
{ 
	var stat = commonCheck (strA, strB, strC,"a valid City");
  if (stat != proceed) return stat; 
  
var illegalChars = /\d/;
  // allow only letters, numbers, and underscores
    if (illegalChars.test(strA.value)) {
       msg(strB,"error","Numeric values are not allowed for the city.") 
           return false; 
    }  

   var temp_value = strA.value; 
   if (temp_value == "") 
   { 
     msg(strB,"error",strC); 
     return false;
   } 
   var Chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVQWXYZ.-"; 
   for (var i = 0; i < temp_value.length; i++) 
   { 
       if (Chars.indexOf(temp_value.charAt(i)) == -1) 
       { 
       	msg(strB,"error","Only alphanumeric, periods and dashes are allowed") 
           return false; 
       } 
       msg(strB,"warn","")
       return true;
   } 
} 



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

function validateState(strA, //field to validate
						strB,    //field to get error
						strC)   // error string
                        
{



	var stat = commonCheck (strA, strB, strC,"a valid State");
  if (stat != proceed) return stat; 
  
  var illegalChars = /\d/;
  // allow only letters, numbers, and underscores
    if (illegalChars.test(strA.value)) {
       msg(strB,"error","Numeric values are not allowed for the State.") 
           return false; 
    }  

   
   var temp_value = strA.value; 
   if (temp_value == "") 
   { 
     msg(strB,"error",strC); 
     return false;
   } 
   var Chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ."; 
   for (var i = 0; i < temp_value.length; i++) 
   { 
       if (Chars.indexOf(temp_value.charAt(i)) == -1) 
       { 
       	msg(strB,"error","Only alphanumeric and periods allowed") 
           return false; 
       } 
       msg(strB,"warn","")
       return true;
   } 
}