function selectOption(product, option, value) {
	var element = document.getElementsByName('attributes[' + product + '][' + option + ']')[0];
	
	for (var i = 0; i < element.options.length; ++i) {
		if (element.options[i].value == value) {
			element.options[i].selected = true;
        } else {
			element.options[i].selected = false;
		}
    }
}