var num_products_to_compare = 0;

function compareProducts(compare_path) {
	var pids = "";
	if(num_products_to_compare >= 2) {
		var cpids = document.getElementsByName('compare_product_ids');

		for(i = 0; i < cpids.length; i++) {
			if(cpids[i].checked)
				pids = pids + cpids[i].value + "/";
		}

		pids = pids.replace(/\/$/, "");
		document.location.href = compare_path + pids;
		return false;
	}
	else {
		alert('لطفاً حدد منتجين على الأقل لبدء المقارنة.');
		return false;
	}
}

function product_comparison_box_changed(state) {
	// Increment num_products_to_compare - needs to be > 0 to submit the product comparison form
	if(state)
		num_products_to_compare++;
	else
		num_products_to_compare--;
}