var val_bill_phone = true;
var val_ship_phone = true;

//////////////////////////////////////////////////////////////////////////////
var errorcolor = "#FCFCC2";
var normalcolor = "#FFFFFF";
var errormessage = "";

function CheckNum(cardnum)
{
    if (cardnum == '')
	{
	    return 0;
	}
    if (isNaN(cardnum))
	{
	    return 0;
	}
    if (!CheckLUHN(cardnum))
	{
	    return 0;
	}
    return 1;
}

function CheckLUHN(cardnum)
{
    var RevNum = new String(cardnum);
    RevNum = Reverse(RevNum);

    var total = new Number(0);
    for ( var i = 0; i < RevNum.length; i += 1 )
	{
	    var temp = 0;
	    if (i % 2)
		{
		    temp = RevNum.substr(i, 1) * 2;
		    if (temp >= 10)
			{
			    var splitstring = new String(temp);
			    temp = parseInt(splitstring.substr(0, 1)) + parseInt(splitstring.substr(1, 1));
			}
		}
	    else
		{
		    temp = RevNum.substr(i, 1);
		}
	    total += parseInt(temp);
	}
    // if there's no remainder, we return 1 (true)
    return (total % 10) ? 0 : 1;
}

function Reverse(strToReverse)
{
    var strRev = new String;
    var i = strToReverse.length;

    while (i--)
	{
	    strRev += strToReverse.charAt(i);
	}
    return strRev;
}

function d_validate()
{
    errormessage = ""
	if(document.getElementById("card_number") != null)
	{
		if (CheckNum(document.getElementById("card_number").value) == 0)
		{
	        errormessage = errormessage + "Please enter a valid Credit Card Number\n" ;
	        document.getElementById("card_number").focus();
	        document.getElementById("card_number").style.backgroundColor = errorcolor;
	    }
	    else
	    {
	        document.getElementById("card_number").style.backgroundColor = normalcolor;
		}
		
		var cDate = new Date();
		var curMonth = cDate.getMonth() + 1;
		var curYear  = cDate.getFullYear();
		var frmMonth = document.getElementById("card_month").value;
		var frmYear =  document.getElementById("card_year").value;

		if(frmYear < curYear || (curMonth > frmMonth && frmYear == curYear))
		{
			errormessage = errormessage + "Please select a valid expiration date\n" ;
			document.getElementById("card_month").style.backgroundColor = errorcolor;
			document.getElementById("card_year").style.backgroundColor = errorcolor;
		}
		else
		{
			document.getElementById("card_month").style.backgroundColor = errorcolor;
			document.getElementById("card_year").style.backgroundColor = normalcolor;
		}

		if  (document.getElementById("cvv2").value.length < 3 || document.getElementById("cvv2").value.length > 4)
		{
			errormessage = errormessage + "Please enter a valid Cvv2\n";
			document.getElementById("cvv2").style.backgroundColor = errorcolor;
		}
		else
		{
			document.getElementById("cvv2").style.backgroundColor = normalcolor;
		}
	}
        
	validate_billing();
	
	if  (!validate_email())
	{
		errormessage= errormessage + "Please enter a valid email address\n" ;
		document.getElementById("email_address").style.backgroundColor = errorcolor;
	}
	else
	{
		document.getElementById("email_address").style.backgroundColor = normalcolor;
	}
	
	if(document.getElementById("shipping_billing_different") != null)
	{
		if(document.getElementById("shipping_billing_different").checked == true)
		{
			validate_shipping();
		}
	}
    
    if (errormessage != "")
    {
        var errormessage2 = "Please make these corrections before proceeding\n";
        errormessage = errormessage2 + errormessage;
        alert(errormessage);
   	    return false;
    }

    document.getElementById('Submit1').style.display = "none";
    document.getElementById('submitProcess').style.display = "block";
    return true;
}

function validate_email() 
{
	var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
	var address = document.getElementById("email_address").value;
	if(reg.test(address) == false)
	{
		return false;
	}
	return true;
}

function validate_phone(phone_number_to_validate)
{
    var reg = /^\d{3}[\ -]{0,1}\d{3}[\ -]{0,1}\d{4}$/;
    var phone = document.getElementById(phone_number_to_validate).value;
    if(reg.test(phone) == false)
    {
        return false;
    }
    return true;
}

function toggle_shipping_info()
{
    if(document.getElementById("shipping_billing_different").checked == true)
    {
        document.getElementById("shipping_info").style.display = "";
    }
    else
    {
        document.getElementById("shipping_info").style.display = "none";
    }
}

function validate_billing()
{
    if(document.getElementById("billing_firstname").value.length < 2)
    {
        errormessage = errormessage + "Please enter a valid billing first name\n" ;
        document.getElementById("billing_firstname").style.backgroundColor = errorcolor;
    }
    else
    {
        document.getElementById("billing_firstname").style.backgroundColor = normalcolor;
    }
        
    if(document.getElementById("billing_lastname").value.length < 2)
    {
        errormessage = errormessage + "Please enter a valid billing last name\n" ;
        document.getElementById("billing_lastname").style.backgroundColor = errorcolor;
    }
    else
    {
        document.getElementById("billing_lastname").style.backgroundColor = normalcolor;
    }
        
    if(document.getElementById("billing_address1").value.length < 3)
    {
        errormessage = errormessage + "Please enter a valid billing address\n" ;
        document.getElementById("billing_address1").style.backgroundColor = errorcolor;
    }
    else
    {
        document.getElementById("billing_address1").style.backgroundColor = normalcolor;
    }
        
    if(document.getElementById("billing_city").value.length < 3)
    {
        errormessage = errormessage + "Please enter a valid billing city\n" ;
        document.getElementById("billing_city").style.backgroundColor = errorcolor;
    }
    else
    {
        document.getElementById("billing_city").style.backgroundColor = normalcolor;
    }
        
    if(document.getElementById("billing_state").value == "select")
    {
        errormessage = errormessage + "Please select a valid billing state\n";
        document.getElementById("billing_state").style.backgroundColor = errorcolor;
    }
    else
    {
        document.getElementById("billing_state").style.backgroundColor = normalcolor;
    }
        
    if(document.getElementById("billing_zip").value.length != 5)
    {
        errormessage = errormessage + "Please enter a valid billing zip\n";
        document.getElementById("billing_zip").style.backgroundColor = errorcolor;
    }
    else
    {
        document.getElementById("billing_zip").style.backgroundColor = normalcolor;
    }
 	
	if(val_bill_phone == true)
	{
		 if(!validate_phone("billing_phone"))
		 {
			errormessage = errormessage + "Please enter a valid billing phone number\n";
			document.getElementById("billing_phone").style.backgroundColor = errorcolor;
		 }
		 else
		 {
			document.getElementById("billing_phone").style.backgroundColor = normalcolor;
		 }
	}
	else
	{
		if(document.getElementById("billing_phone").value != "")
		{
			if(!validate_phone("billing_phone"))
			 {
				errormessage = errormessage + "Please enter a valid billing phone number\n";
				document.getElementById("billing_phone").style.backgroundColor = errorcolor;
			 }
			 else
			 {
				document.getElementById("billing_phone").style.backgroundColor = normalcolor;
			 }
		}
	}  
}

function validate_shipping()
{
    if(document.getElementById("shipping_firstname").value.length < 2)
    {
        errormessage= errormessage + "Please enter a valid shipping first name\n";
        document.getElementById("shipping_firstname").style.backgroundColor = errorcolor;
    }
    else
    {
        document.getElementById("shipping_firstname").style.backgroundColor = normalcolor;
    }
        
    if(document.getElementById("shipping_lastname").value.length < 2)
    {
        errormessage= errormessage + "Please enter a valid shipping last name\n";
        document.getElementById("shipping_lastname").style.backgroundColor = errorcolor;
    }
    else
    {
        document.getElementById("shipping_lastname").style.backgroundColor = normalcolor;
    }
        
    if(document.getElementById("shipping_address1").value.length < 3)
    {
        errormessage = errormessage + "Please enter a valid shipping address\n";
        document.getElementById("shipping_address1").style.backgroundColor = errorcolor;
    }
    else
    {
        document.getElementById("shipping_address1").style.backgroundColor = normalcolor;
    }
        
    if(document.getElementById("shipping_city").value.length < 3)
    {
        errormessage = errormessage + "Please enter a valid shipping city\n";
        document.getElementById("shipping_city").style.backgroundColor = errorcolor;
    }
    else
    {
        document.getElementById("shipping_city").style.backgroundColor = normalcolor;
    }
        
    if(document.getElementById("shipping_state").value == "select")
    {
        errormessage = errormessage + "Please select a valid shipping state\n";
        document.getElementById("shipping_state").style.backgroundColor = errorcolor;
    }
    else
    {
        document.getElementById("shipping_state").style.backgroundColor = normalcolor;
    }
        
    if(document.getElementById("shipping_zip").value.length != 5 && !isNaN(document.getElementById("shipping_zip").value))
    {
        errormessage = errormessage + "Please enter a valid shipping zip\n" ;
        document.getElementById("shipping_zip").style.backgroundColor = errorcolor;
    }
    else
    {
        document.getElementById("shipping_zip").style.backgroundColor = normalcolor;
    }
    
    if(document.getElementById("shipping_phone") != null)
    {
        if(val_ship_phone == true)
        {
             if(!validate_phone("shipping_phone"))
             {
                errormessage = errormessage + "Please enter a valid shipping phone number\n";
                document.getElementById("shipping_phone").style.backgroundColor = errorcolor;
             }
             else
             {
                document.getElementById("shipping_phone").style.backgroundColor = normalcolor;
             }
        }
        else
        {
            if(document.getElementById("shipping_phone").value != "")
            {
                !validate_phone("shipping_phone");
            }
        }     
    }
}

function validate_simple_info()
{
    errormessage = ""
    
    if(document.getElementById("billing_fullname").value.length < 4)
    {
        errormessage = errormessage + "Please enter a valid billing name\n" ;
        document.getElementById("billing_fullname").style.backgroundColor = errorcolor;
    }
    else
    {
        document.getElementById("billing_name").style.backgroundColor = normalcolor;
    }
    
    if  (!validate_email())
    {
        errormessage= errormessage + "Please enter a valid email address\n" ;
        document.getElementById("email_address").style.backgroundColor = errorcolor;
    }
	else
	{
		document.getElementById("email_address").style.backgroundColor = normalcolor;
	}
    
    if (errormessage != "")
    {
        var errormessage2 = "Please make these corrections before proceeding\n";
        errormessage = errormessage2 + errormessage;
        alert(errormessage);
   	    return false;
    }

    document.getElementById('Submit1').style.display = "none";
    document.getElementById('submitProcess').style.display = "block";
    return true;
}

function validate_payment()
{
	errormessage = ""
	if (CheckNum(document.getElementById("card_number").value) == 0)
	{
        errormessage = errormessage + "Please enter a valid Credit Card Number\n" ;
        document.getElementById("card_number").focus();
        document.getElementById("card_number").style.backgroundColor = errorcolor;
    }
    else
    {
        document.getElementById("card_number").style.backgroundColor = normalcolor;
	    var cDate = new Date();
	    var curMonth = cDate.getMonth() + 1;
	    var curYear  = cDate.getFullYear();
        var frmMonth = document.getElementById("card_month").value;
        var frmYear =  document.getElementById("card_year").value;

		if(frmYear < curYear || (curMonth > frmMonth && frmYear == curYear))
		{
            errormessage = errormessage + "Please select a valid expiration date\n" ;
            document.getElementById("card_month").style.backgroundColor = errorcolor;
            document.getElementById("card_year").style.backgroundColor = errorcolor;
		}
        else
        {
            document.getElementById("card_month").style.backgroundColor = errorcolor;
            document.getElementById("card_year").style.backgroundColor = normalcolor;
        }

        if  (document.getElementById("cvv2").value.length < 3 || document.getElementById("cvv2").value.length > 4)
        {
            errormessage = errormessage + "Please enter a valid Cvv2\n";
            document.getElementById("cvv2").style.backgroundColor = errorcolor;
        }
        else
        {
            document.getElementById("cvv2").style.backgroundColor = normalcolor;
        }
    }
    
    if (errormessage != "")
    {
        var errormessage2 = "Please make these corrections before proceeding\n";
        errormessage = errormessage2 + errormessage;
        alert(errormessage);
   	    return false;
    }

    document.getElementById('Submit1').style.display = "none";
    document.getElementById('submitProcess').style.display = "block";
    return true;
}