function CheckForm(form){
	if(form.User.value==""){
		alert("请输入您的会员帐号！");
		form.User.focus();
		return false;
	}
	if(form.PassWord.value==""){
		alert("请输入登录密码！");
		form.PassWord.focus();
		return false;
	}
	//if(typeof(form.RandCode)=="undefined"){
	//}else{}
	if(typeof(form.RandCode)=="object"){
		if(form.RandCode.value==""){
		   alert ("请输入右边的验证码！");
		   form.RandCode.focus();
		   return false;
		}
	}
}