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


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

function setfocus(vfld)
{
  glb_vfld = vfld;
  setTimeout( 'setFocusDelayed()', 100 );
}



function msg(fld,     // id of element to display message in
             msgtype, // class to give element ("warn" or "error")
             message) // string to display
{
  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
};

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, "red", "This field is required.");  
      setfocus(vfld);
      return false;
    }
    else {
      return true;  
    }
  }
  return proceed;
}


function validatePresent(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, "warn", "");  
  return true;
};


function validateName  (vfld,   // element to be validated
                         ifld,   // id of element to receive info/error msg
                         reqd)   // true if required
{

	  var tfld = trim(vfld.value);  // value of field with whitespace trimmed off
  var email = /^[a-zA-Z]{2,} [a-zA-Z]{2,}$/
/*	email = /^\w+ (?:\W+\w+){,1}$/ */
  if (!email.test(tfld)) {
    msg (ifld, "error", "Please enter your full name");
    setfocus(vfld);
    return false;
  	} else {
	   msg (ifld, "warn", "");
	return true;
	}
}

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);
  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 valid email address.");
    setfocus(vfld);
    return false;
  }

  var email2 = /^[A-Za-z0-9][\w.-]+@\w[\w.-]+\.[\w.-]*[A-Za-z0-9][A-Za-z]$/
  if (!email2.test(tfld))  {
    	msg (ifld, "error", "Please enter a valid email address.");
	setfocus(vfld);
   	 return false;
	} else {
	var free_email = /.*(hotmail|yahoo|gmail|msn).*/i
	
	if (free_email.test(tfld))  {
	msg (ifld, "error", "Please use a non-free email address.");
	setfocus(vfld);
   	 return false;
	} else {
	msg (ifld, "warn", "");
	}
	}  
   
  return true;
};

function show_states( value ) {
	var row_style;
	row_style="inline";
	if (navigator.appVersion.indexOf("MSIE")==-1) {
	row_style="table-row";
	}
	if (value=='United States') {
	
	document.getElementById("states").style.display=row_style;
	} else {
		document.getElementById("states").style.display='none';
	}

}