function sentaku() {
	document.form1.mode.value = 1;
	document.form1.submit();
}


function compareItems() {
	compares = document.shohins.compares;
	ids = new Array();
	for (var i = 0; i < compares.length; i++) {
		if (compares[i].checked) {
			ids.push(compares[i].value);
		}
	}
	if (ids.length == 0) {
		alert('商品を選択して下さい。');
	} else {
		location.href = 'compare.php?ids=' + ids.join('+');
	}
}