// compare.js

function submitCompare(form) {
	var count = 0;
	
	if (form.compare.length == null) {
		if (form.compare.checked) {
			count++;
		}
	} else {
		for (var i = 0; i < form.compare.length; i++) {
			if (form.compare[i].checked) {
				count++;
			}
		}
	}
	
	if (count == 0) {
		alert('Please select up to 3 products to compare.');
	} else if (count > 3) {
		alert('You may only select a maximum of 3 products to compare.');
	} else {
		form.submit();
	}
}