function myCheckSearch()
{
	var KeyStr = document.Search_form.keyword.value;
	var Se_Type = document.Search_form.SeTypeTxt.value;
	if (KeyStr == '' || KeyStr=='输入关键字，立即搜索最新信息')
	{
		alert('搜索关键字不能为空！');
		return false;
	}
}