<!--
	var cont = 0;

	function compare() {
		
		obj= document.multiple_products_cart_quantity.compare; 
		for (var i = 0; i < obj.length; i++) {
			if(obj[i].checked) {
				cont++;
			}
		}

		if (cont < 2) {
			alert('You must select at least 2 products to compare');
		} else {
			document.multiple_products_cart_quantity.action="compare.php";
			document.multiple_products_cart_quantity.submit();	
		}
	}
-->