// Declaring required variables
var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()- ";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters + "+";
// Minimum no of digits in an international phone no.
var minDigitsInIPhoneNumber = 10;

function isInteger(s)
{   var i;
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag) {
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function checkInternationalPhone(strPhone) {
	s=stripCharsInBag(strPhone,validWorldPhoneChars);
	return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}

function validate() {
	formvalue = document.sal_updates;
	if ((formvalue.first_name.value==null)||(formvalue.first_name.value=="")) {
		alert("Please enter your first name.");
		formvalue.first_name.focus();
		return false;
	}
	if ((formvalue.last_name.value==null)||(formvalue.last_name.value=="")) {
		alert("Please enter your last name.");
		formvalue.last_name.focus();
		return false;
	}
	if ((formvalue.address1.value==null)||(formvalue.address1.value=="")) {
		alert("Please enter your address.");
		formvalue.address1.focus();
		return false;
	}
	if ((formvalue.city.value==null)||(formvalue.city.value=="")) {
		alert("Please enter your city.");
		formvalue.city.focus();
		return false;
	}
	if (formvalue.zipcode.value.length==0){
		alert("Please enter a zip code.");
		formvalue.zipcode.focus();
		return false;		
	}
	if ((formvalue.email.value!=null)&&(formvalue.email.value!="")) {
		if (formvalue.email.value.indexOf("@",1) == -1) {
			alert("Please enter a valid email address.");
			formvalue.email.focus();
			return false;		
		} else if (formvalue.email.value.indexOf(".",3) == -1) {
			alert("Please enter a valid email address.");
			formvalue.email.focus();
			return false;		
		} else if (formvalue.email.value.length < 5) {
			alert("Please enter a valid email address.");
			formvalue.email.focus();
			return false;
		}
	} else if ((formvalue.email.value==null)||(formvalue.email.value=="")) {
			alert("Please enter an email address.");
			formvalue.email.focus();
			return false;
	}
	if ((formvalue.phone_areacode.value!=null)&&(formvalue.phone_areacode.value!="")&&(formvalue.phone_prefix.value!=null)&&(formvalue.phone_prefix.value!="")&&(formvalue.phone_suffix.value!=null)&&(formvalue.phone_suffix.value!="")){
		if (formvalue.phone_areacode.value.length!=3){
			alert("Please enter a valid area code.");
			formvalue.phone_areacode.focus();
			return false;
		}
		if (formvalue.phone_prefix.value.length!=3){
			alert("Please enter a valid prefix.");
			formvalue.phone_prefix.focus();
			return false;
		}
		if (formvalue.phone_suffix.value.length!=4){
			alert("Please enter a valid phone number.");
			formvalue.phone_suffix.focus();
			return false;
		}
	} else if (((formvalue.phone_areacode.value!=null)&&(formvalue.phone_areacode.value!=""))||((formvalue.phone_prefix.value!=null)&&(formvalue.phone_prefix.value!=""))||((formvalue.phone_suffix.value!=null)&&(formvalue.phone_suffix.value!=""))) {
		if (formvalue.phone_areacode.value.length==0){
			alert("Please enter an area code.");
			formvalue.phone_areacode.focus();
			return false;
		}
		if (formvalue.phone_prefix.value.length==0){
			alert("Please enter a prefix.");
			formvalue.phone_prefix.focus();
			return false;
		}
		if (formvalue.phone_suffix.value.length==0){
			alert("Please enter a phone number.");
			formvalue.phone_suffix.focus();
			return false;
		}
	}

return true;
}

function addCommas(nStr)
{
	nStr += '';
	x = nStr.split('.');
	x1 = x[0];
	x2 = x.length > 1 ? '.' + x[1] : '';
	var rgx = /(\d+)(\d{3})/;
	while (rgx.test(x1)) {
		x1 = x1.replace(rgx, '$1' + ',' + '$2');
	}
	return x1 + x2;
}

function submitenter(myfield,e) {
	var keycode;
	if (window.event) {
			keycode = window.event.keyCode;
	} else if (e) {
		keycode = e.which;
	} else {
		return true;
	}

	if (keycode == 13) {
			if (validate()) {
				myfield.form.submit();
			}
			return false;
	} else if (myfield.name=="phone_areacode"||myfield.name=="phone_prefix"||myfield.name=="phone_suffix") {
		if (((keycode < 48)||(keycode > 57))&&keycode>31&&keycode!=127) {
			return false;
		}
		if ((keycode >= 48)&&(keycode <= 57)) {
/*				if (myfield.name=="phone_areacode"&&myfield.value.length==2) {
				myfield.form.phone_prefix.focus();
				return true;
			}
			if (myfield.name=="phone_prefix"&&myfield.value.length==2) {
				myfield.form.phone_suffix.focus();
				return true;
			}
			if (myfield.name=="phone_suffix"&&myfield.value.length==3) {
				myfield.form.email.focus();
				return true;
			}
*/			}
	} else if (myfield.name=="donation_amount") {
		var temp_str = myfield.value.replace(',','').replace('.00','').replace('.','').replace('$','');
		if ((((keycode < 48)||(keycode > 57))&&keycode>31&&keycode!=127)||(temp_str.length>9&&keycode>=48&&keycode<=57)) {
			return false;
		}
	} else {
		return true;
	}
}

function input_quantity(myfield,e) {
	var keycode;
	if (window.event) {
			keycode = window.event.keyCode;
	} else if (e) {
		keycode = e.which;
	} else {
		return true;
	}

	if (keycode == 13) {
			if (validateOptions(myfield.form)) {
				myfield.form.submit();
			}
			return false;
	} else {
		if (((keycode < 48)||(keycode > 57))&&keycode>31&&keycode!=127) {
			return false;
		} else {
			return true;
		}
	}
	
	return false;
}

function calcTotal(product_id) {
	var price_field = getObj('price_' + product_id);
	var total_field = getObj('total_' + product_id);
	var qty_field = getObj('add_id_' + product_id);
	var price = 0;
	var dollars, cents;
	var total = ''
	var qty = 0;
	var price_tmp, total_tmp, qty_tmp;
	if (price_field) {
		price_tmp = price_field.value;
		if ((price_tmp - 0) == price_tmp && price_tmp.length > 0 && !isNaN(price_tmp) && price_tmp >= 0) {
			price = (price_tmp - 0);
		}
	}
	if (qty_field) {
		qty_tmp = 0;
		if (qty_field.type == "checkbox") {
			if (qty_field.checked) {
				qty_tmp = qty_field.value;
			}
		} else {
			qty_tmp = qty_field.value;
		}
		if ((qty_tmp - 0) == qty_tmp && qty_tmp.length > 0 && !isNaN(qty_tmp) && qty_tmp >= 0) {
			qty = Math.floor(qty_tmp - 0);
		}
	}
	if (total_field) {
		total_tmp = qty * price;
		if (total_tmp > 0) {
			total_tmp = Math.round(total_tmp * 100) / 100;
			dollars = Math.floor(total_tmp);
			cents = (total_tmp * 100) % 100;
			if (cents < 10) {
				cents = "0" + cents;
			}
			total = '$' + dollars + '.' + cents;	
		}
		total_field.innerHTML = total;
	}
}