// JavaScript Document

<!-- Begin
function changeImg(img_name,img_src) {
	document[img_name].src = img_src;
}

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

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

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

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

	for (var i=0;i<str.length;i++)
		if (charset.indexOf(str.substr(i,1))<0)
		{
			result = false;
			break;
		}
	
	return result;
}
function validInt(formField,fieldLabel)
{
	var result = true;

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


function validEmail(email)
{		
	var result = true;
		
	atPos = email.value.indexOf("@");
	dotPos = email.value.lastIndexOf(".");

	if (atPos <= 0 || dotPos == -1 || dotPos < atPos || dotPos-atPos <= 1) {
		result = false;
		alert("E-Mail Address must follow xxx@xxx.xxx format!");
		email.focus();		
	} 

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

 	if (result)
 	{
 		var elems = formField.value.split("/");
 		
 		result = (elems.length == 3); 
 		
 		if (result)
 		{
 			var month = parseInt(elems[0]);
  			var day = parseInt(elems[1]);
 			var year = parseInt(elems[2]);
			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 empty(formField)
{
	
	var result = false;
	
	if (formField.value == "")
	{
		formField.focus();
		result = true;
	}
	
	return result;
}

// End -->