/***
validRequired(formField, fieldLabel) -- checks for a field being empty
validEmail(formField, fieldLabel, required) -- checks for a correctly formatted email address
validNum(formField, fieldLabel, required) -- checks for a valid number (a string where all the characters are digits)
validInt(formField, fieldLabel, required) -- checks for a number (integer) that can be correctly parsed with the function parseInt
validDate(formField, fieldLabel, required) -- checks for a correctly formatted date

formField -- the document reference to your form field (e.g., myform.fieldName)
fieldLabel -- the user friendly string that you want the error message to refer to your field by
required -- whether the field is required to be filled in by the user (true/false)
<form method="post" action="saveData.cfm" enctype="multipart/form-data" name="frm_logo" onsubmit="return validateForm(this)">
***/
function isEmailAddr(email)
{
  var result = false;
  var theStr = new String(email);
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  return result;
}

function validRequired(formField,fieldLabel)
{
	var result = true;
	
	if (formField.value == "")
	{
		alert('Please enter a value for the "' + fieldLabel +'" field.');
		formField.focus();
		result = false;
	}
	
	return result;
}

function allDigits(str)
{
	return inValidCharSet(str,"0123456789");
}

function inValidCharSet(str,charset)
{
	var result = true;

	// Note: doesn't use regular expressions to avoid early Mac browser bugs	
	for (var i=0;i<str.length;i++)
		if (charset.indexOf(str.substr(i,1))<0)
		{
			result = false;
			break;
		}
	
	return result;
}

function validEmail(formField,fieldLabel,required)
{
	var result = true;
	
	if (required && !validRequired(formField,fieldLabel))
		result = false;

	if (result && ((formField.value.length < 3) || !isEmailAddr(formField.value)) )
	{
		alert("Please enter a complete email address in the form: yourname@yourdomain.com");
		formField.focus();
		result = false;
	}
   
  return result;

}

function validNum(formField,fieldLabel,required)
{
	var result = true;

	if (required && !validRequired(formField,fieldLabel))
		result = false;
  
 	if (result)
 	{
 		if (!allDigits(formField.value))
 		{
 			alert('Please enter a number for the "' + fieldLabel +'" field.');
			formField.focus();		
			result = false;
		}
	} 
	
	return result;
}


function validInt(formField,fieldLabel,required)
{
	var result = true;

	if (required && !validRequired(formField,fieldLabel))
		result = false;
  
 	if (result)
 	{
 		var num = parseInt(formField.value,10);
 		if (isNaN(num))
 		{
 			alert('Please enter a number for the "' + fieldLabel +'" field.');
			formField.focus();		
			result = false;
		}
	} 
	
	return result;
}


function validDate(formField,fieldLabel,required)
{
	var result = true;

	if (required && !validRequired(formField,fieldLabel))
		result = false;
  
 	if (result)
 	{
 		var elems = formField.value.split("/");
 		
 		result = (elems.length == 3); // should be three components
 		
 		if (result)
 		{
 			var month = parseInt(elems[0],10);
  		var day = parseInt(elems[1],10);
 			var year = parseInt(elems[2],10);
			result = allDigits(elems[0]) && (month > 0) && (month < 13) &&
					 allDigits(elems[1]) && (day > 0) && (day < 32) &&
					 allDigits(elems[2]) && ((elems[2].length == 2) || (elems[2].length == 4));
 		}
 		
  		if (!result)
 		{
 			alert('Please enter a date in the format MM/DD/YYYY for the "' + fieldLabel +'" field.');
			formField.focus();		
		}
	} 
	
	return result;
}

function selectDropDown(formField,formLabel)
{
	var result = true;
  var selectedValue = (formField.options[formField.selectedIndex].value);
  if (selectedValue == "")
  {
  	alert('Make a selestion in the '+formLabel+' field.');
    formField.focus();
    result = false;
   }
   return result;
}


function valRadiobutton(formField,formLabel) {
	var result = false;

	for (i=0; i<formField.length; i++) {
	if (thisform.myradiobutton[i].checked) {
	result = true;
	}
	else{
  	alert('Make a selestion in the '+formLabel+' field.');
	}
	}
	return false;
}




function validateForm(theForm)
{
	// Customize these calls for your form

	// Start ------->
if (!validRequired(search.keyword,"Search Field"))
		return false;


	// <--------- End

/***

if (!valRadiobutton(frmLocation.CUST_NUM,"Location"))
		return false;		
		
if (!validNum(theForm.IOA_MEMBER_NUM,"IOA MEMBER NUM",true))
		return false;
		
	if (!selectDropDown(frm_user.STATE_PROV,"STATE / PROVINCE"))
		return false;		


if (!validRequired(theForm.fullname,"Name"))
		return false;

	if (!validEmail(theForm.email,"Email Address",true))
		return false;

	if (!validDate(theForm.available,"Date Available",true))
		return false;

	if (!validNum(theForm.yearsexperience,"Years Experience",true))
		return false;
***/	
	
	return true;
}