function tologin() {
  if (login.userid.value=="" || login.userpassword.value=="")
  {          alert("请您输入用户名和密码！");
          login.userid.focus();
          return false;
		  
		  
  }  if (login.userid.value!="" && login.userpassword.value!="") {
          login.action="http://172.19.48.141:9080/jcms/index_jcms.jsp";
          login.submit();
          login.userpassword.value="";
  }
}