function validate(form,lang) {
	var quantity = form.quantity;
	if (form.color.value == -1) {
		alert("Please select the color");
		return false;
	}
	if (form.size.value == -1) {
		alert("Please select the size");
		return false;
	}
	if (!quantity.value.length || !(parseInt(quantity.value)>0)){
		if (lang=="is") alert("Vantar aš setja inn magn.");
		else alert("Enter a valid quantity.");
		quantity.focus();
		return false;
	}
	quantity.value = parseInt(quantity.value);
	if (lang=="is") return confirm ('Viltu setja vöruna ķ körfuna?');
	else return confirm ('Do you want to add this product to shopcart?');
}