// Brochure Holders by Atelier do Sul

function calcPrice2()
{
	qt=document.getElementById('quantity');
	price1=document.getElementById('price1');
	price100=document.getElementById('price100');
	total=document.getElementById('total');
	add=document.getElementById('add');

	if(!(isInteger(qt.value)) || qt.value<0)
	{
		total.value='Invalid quantity';
		add.disabled=true;
		return false;
	}
	else if (qt.value<100)
	{
		tmp=qt.value*price1.value;
		add.disabled=false;
	} else
	{
		tmp=qt.value*price100.value;
		add.disabled=false;
	}
	total.value='€ '+tmp.toFixed(2);
}

function calcPrice(qty,id)
{
	qt=document.getElementById(qty);
	if(!(isInteger(qt.value)) || qt.value<0)
	{
		alert('Invalid quantity');
		window.location="my_cart.php";
	}
	else 
	{
		window.location="my_cart.php?action=change&id="+id+"&quantity="+qt.value;
	}
}

function validate()
{ 
    if (document.getElementById('name').value==""){
		alert ("Please enter your name!");
	}
	else if (! isValidEmail(document.getElementById('email').value)) {
        alert("Please enter a valid email address!");
    }
	else document.getElementById('frm').submit();
}

function isInteger(s)
{
	var i;
	for (i = 0; i < s.length; i++)
	{
		var c = s.charAt(i);
		if (!isDigit(c)) return false;
	}
	return true;
}

function isDigit (c)
{
	return ((c >= "0") && (c <= "9"))
}

function isValidEmail(email, required) {
    if (required==undefined) {   // if not specified, assume it's required
        required=true;
    }
    if (email==null) {
        if (required) {
            return false;
        }
        return true;
    }
    if (email.length==0) {  
        if (required) {
            return false;
        }
        return true;
    }
    if (! allValidChars(email)) {  // check to make sure all characters are valid
        return false;
    }
    if (email.indexOf("@") < 1) { //  must contain @, and it must not be the first character
        return false;
    } else if (email.lastIndexOf(".") <= email.indexOf("@")) {  // last dot must be after the @
        return false;
    } else if (email.indexOf("@") == email.length) {  // @ must not be the last character
        return false;
    } else if (email.indexOf("..") >=0) { // two periods in a row is not valid
	return false;
    } else if (email.indexOf(".") == email.length) {  // . must not be the last character
	return false;
    }
    return true;
}

function allValidChars(email) {
  var parsed = true;
  var validchars = "abcdefghijklmnopqrstuvwxyz0123456789@.-_";
  for (var i=0; i < email.length; i++) {
    var letter = email.charAt(i).toLowerCase();
    if (validchars.indexOf(letter) != -1)
      continue;
    parsed = false;
    break;
  }
  return parsed;
}