//搜索检查
function check_form(){
	var sForm	=	xGetElementById('sForm');

	var keyword	=	sForm.kw.value.trim();

	keyword	 =	keyword.replace(/['"\\`<>?!@#$%^&*\~()\-=+]+/, "");

	url	 =	sForm.search_type.value+"_list.php";

	var tmp	=	'';

	if(keyword)	 tmp+=	 "&kw=" + encodeURIComponent(keyword);
	if(sForm.tr_brand.value) tmp+= "&brand=" + sForm.tr_brand.value;

		
	window.location.href	=	url+'?'+tmp;
	return false;

}