function checkKeyword(obj)
{
	var key=obj.form.elements["keyword"];
	if($.trim(key.value).length==0)
	{
		alert("\uFEFF\u5173\u952E\u8BCD\u4E0D\u80FD\u4E3A\u7A7A");
		key.focus();
	}
	else
	{
		obj.form.submit();
	}
}
$(document.body).ready(function(){
	var btn=$(".submit");
	for(i=0;i<btn.length;i++)
	{
		$(btn[i]).bind("click",function(){
			checkKeyword(this);
		})
	}
});