// JavaScript Document
function validEmpty(formField)
{
	var result = false;
	
	if (formField.value == "")
	{
		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 allDecimalDigits(str)
{
	return inValidCharSet(str,"0123456789.");
}

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

	if (required && !validRequired(formField,fieldLabel))
		result = false;
  
 	if (result)
 	{

		if (formField.value.charAt(0) == "-") {
			var trimmedFldVal = formField.value.substr(1);
		} else {
			var trimmedFldVal = formField.value;
		}

 		if (!allDecimalDigits(trimmedFldVal))
 		{
 			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;
		} else {
		
			if (formField.value.charAt(0) == "-") {
				var trimmedFldVal = formField.value.substr(1);
			} else {
				var trimmedFldVal = formField.value;
			}
		
 			if (!allDigits(trimmedFldVal))
 			{
 				alert('Please enter a number for the "' + fieldLabel +'" field.');
				formField.focus();		
				result = false;
			}		
		
		}
	} 
	
	return result;
}

function validSame(formField1,formField2,fieldLabel1,fieldLabel2,required)
{
	var result = true;

	if (required && !validRequired(formField1,fieldLabel1))
		result = false;

	if (required && !validRequired(formField2,fieldLabel2))
		result = false;
  
 	if (result)
 	{
		if (formField1.value != formField2.value) {
			alert('Please enter "' + fieldLabel1 +'" and "' + fieldLabel2 + '" fields the same.');
			formField1.focus();
			result = false;
		}
	} 
	
	return result;
}

function addHTTPHTTPS(slink) {
	slink = slink.toLowerCase();
	if (slink.indexOf("https://") < 0 && slink.indexOf("http://") < 0) {
		slink = "http://" + slink;
	}
	
	return slink;
}

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

	if (document.layers||document.getElementById||document.all) {

		var str=formField.value;
		var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
		if (filter.test(str)) {
			result=true
		} else {
				alert('Invalid E-mail ID. Please enter a valid Email Address.');
				formField.focus();
				result = false;
		}

	} else {
		if (required && !validRequired(formField,fieldLabel))
			result = false;
	}

	return result;
}