function setTab(tabName){
	MM_showHideLayers('descriptionLayer','','hide');
	MM_showHideLayers('infoLayer','','hide');
	MM_showHideLayers('shippingLayer','','hide');
	MM_showHideLayers(tabName,'','show');
	
	if(tabName == 'descriptionLayer'){
		MM_swapImage('descriptionImage','','images/pronav/DescriptionOn.jpg');
	}
	else{
		MM_swapImage('descriptionImage','','images/pronav/DescriptionOff.jpg');
	}
	if(tabName == 'infoLayer'){
		MM_swapImage('infoImage','','images/pronav/FeaturesOn.jpg');
	}
	else{
		MM_swapImage('infoImage','','images/pronav/FeaturesOff.jpg');
	}
	if(tabName == 'shippingLayer'){
		MM_swapImage('shippingImage','','images/pronav/ShippingInfoOn.jpg');
	}
	else{
		MM_swapImage('shippingImage','','images/pronav/ShippingInfoOff.jpg');
	}
	
}

//User scripts
function validateUser(frmEle){
	if(frmEle.FirstName.value == ""){
		alert("You must enter a Firstname!");
		frmEle.FirstName.focus();
		return false;
	}
	if(frmEle.LastName.value == ""){
		alert("You must enter a Lastname!");
		frmEle.LastName.focus();
		return false;
	}
	if(frmEle.Address.value == ""){
		alert("You must enter a Address!");
		frmEle.Address.focus();
		return false;
	}
	if(frmEle.Email){
		if(frmEle.Email.value == ""){
			alert("You must enter a Email!");
			frmEle.Email.focus();
			return false;
		}
		var exclude=/[^@\-\.\w]|^[_@\.\-]|[\._\-]{2}|[@\.]{2}|(@)[^@]*\1/;
		var check=/@[\w\-]+\./;
		var checkend=/\.[a-zA-Z]{2,4}$/;
		
		emailad = frmEle.Email.value;
		
		if(((emailad.search(exclude) != -1)||(emailad.search(check))
		== -1)||(emailad.search(checkend) == -1)){
	  		alert("Incorrect email address!  Please ammend.");
			frmEle.Email.focus();
			return false;
		}
	 }
	if(frmEle.City.value == ""){
		alert("You must enter a City!");
		frmEle.City.focus();
		return false;
	}
	if(frmEle.State.value == "" || frmEle.State.value == "0"){
		alert("You must enter a State!");
		frmEle.State.focus();
		return false;
	}
	if(frmEle.Zip.value == ""){
		alert("You must enter a Zip!");
		frmEle.Zip.focus();
		return false;
	}
	if(frmEle.Phone.value == ""){
		alert("You must enter a Phone Number!");
		frmEle.Phone.focus();
		return false;
	}
	if(frmEle.Password){
		if(frmEle.Password.value == ""){
			alert("You must enter a Password!");
			frmEle.Password.focus();
			return false;
		}
		if(frmEle.Password.value != frmEle.Password2.value){
			alert("Passwords do not match!");
			frmEle.Password.focus();
			return false;
		}
	}
}

function validatePayment(frmEle){

	if(frmEle.measure_disclaimer.checked == false){
		alert("You must read the policy and disclaimer and agree to the terms!");
		frmEle.measure_disclaimer.focus();
		return false;
	}
	
	if(frmEle.PaymentType[0].checked){//CreditCard
		if(frmEle.PaymentID.value == "0"){
			alert("You must select a credit card type.");
			frmEle.PaymentID.focus();
			return false;
		}
		if(frmEle.CardNumber.value == ""){
			alert("You must enter a credit card number.");
			frmEle.CardNumber.focus();
			return false;
		}
		// Credit Card Number Validation: AMEX, VISA, MasterCard 
		var type = "MasterCard"; 
		if(frmEle.PaymentID.value == "1") type="MasterCard";
		if(frmEle.PaymentID.value == "2") type="Visa";
		if(frmEle.PaymentID.value == "3") type="Discover";
		if(frmEle.PaymentID.value == "4") type="American Express";
		var num = frmEle.CardNumber.value;
		var dig1 = num.charAt(0); 
		/*var dig2 = num.charAt(1); 
		var dig3 = num.charAt(2); 
		var dig4 = num.charAt(3); 
		var dig5 = num.charAt(4); 
		var dig6 = num.charAt(5); 
		var dig7 = num.charAt(6); 
		var dig8 = num.charAt(7); 
		var dig9 = num.charAt(8); 
		var dig10 = num.charAt(9); 
		var dig11 = num.charAt(10); 
		var dig12 = num.charAt(11); 
		var dig13 = num.charAt(12); 
		var dig14 = num.charAt(13); 
		var dig15 = num.charAt(14); 
		var dig16 = num.charAt(15); */

		if(type == "American Express"){  
			if ((dig1 != "3") || (num.length != 15)) {
				alert('Invalid credit card number! Please ensure you are using an American Express card or change the Type of Card.');
				frmEle.PaymentID.focus();
				return false; 
			}  
		}
		if(type == "Visa") {  
			if ((dig1 != "4") || (num.length != 16))  {
				alert('Invalid credit card number! Please ensure you are using a Visa or change the Type of Card.');  
				frmEle.PaymentID.focus();
				return false; 
			}
		}
		if(type == "MasterCard") {  
			if ((dig1 != 5) || (num.length != 16)) {
				alert('Invalid credit card number! Please ensure you are using a Mastercard or change the Type of Card.'); 
				frmEle.PaymentID.focus();
				return false; 
			}  
		}
		if(frmEle.Name.value == ""){
			alert("You must enter the name on the credit card.");
			frmEle.Name.focus();
			return false;
		}
		if(frmEle.Zip.value == ""){
			alert("You must enter your zip code.");
			frmEle.Zip.focus();
			return false;
		}
		if(frmEle.cvv2.value.length < 3){
			
			alert("Please enter the CVV2 number on the credit card.");
			frmEle.cvv2.focus();
			return false;
		}
		
	}
	if(frmEle.PaymentType[1].checked){//Alternative methods
		if(frmEle.Alternative.checked == false){
			alert("You must select Call for Credit Card if you selected Alternative Payment Method!");
			//frmEle.frmEle.Alternative[0].focus();
			return false;
		}
	}
	MM_showHideLayers('PaymentDiv','','show');
}

function validatePaymentMethod(clicked){
	frmEle = document.shopcart;
	//REMOVE OPTIONS SELECTED	
	//if bill me later or credit card, remove alternative methods
	if((frmEle.PaymentType[0].checked) && clicked != 'alternative'){
		frmEle.Alternative.checked = false;
	}
	//if an alternative method selected, check alternative payment type
	if(frmEle.Alternative.checked){
		frmEle.PaymentType[1].checked = true;
	}
	
	//ENABLE-DISABLE OPTIONS
	if(frmEle.PaymentType[0].checked)
	{//credit card
		frmEle.PaymentID.disabled = false;
		frmEle.CardNumber.disabled = false;
		frmEle.expMonth.disabled = false;
		frmEle.expYear.disabled = false;
		frmEle.Name.disabled = false;
		frmEle.Address.disabled = false;
		frmEle.City.disabled = false;
		frmEle.State.disabled = false;
		frmEle.Zip.disabled = false;		
		
		frmEle.Alternative.checked = false;
	}
	else
	{//Alternative
		frmEle.PaymentID.disabled = true;
		frmEle.CardNumber.disabled = true;
		frmEle.expMonth.disabled = true;
		frmEle.expYear.disabled = true;
		frmEle.Name.disabled = true;
		frmEle.Address.disabled = true;
		frmEle.City.disabled = true;
		frmEle.State.disabled = true;
		frmEle.Zip.disabled = true;
		
		frmEle.Alternative.disabled = false;
		frmEle.Alternative.checked = true;
	}
}
function setPayment(theType){

}
function validatePaypalCheckout(frmEle)
{
	if(frmEle.measure_disclaimer.checked == false){
		alert("You must read the policy and disclaimer and agree to the terms!");
		frmEle.measure_disclaimer.focus();
		return false;
	}

	MM_showHideLayers('PaymentDiv','','show');
}