// JavaScript Document
function checkVisitorlogin(obj_form) {
	//用户名
	if(obj_form.VisitorOnlineUserName.value == "") {
		alert("Please fill in User ID!");
		obj_form.VisitorOnlineUserName.focus();
		return false;
	}
	if(obj_form.VisitorOnlineUserName.value.length < 4 || obj_form.VisitorOnlineUserName.value.length >12) {
		alert("Username restricted to 4-12 characters");
		obj_form.VisitorOnlineUserName.focus();
		return false;
	}
	
	//密码
	if(obj_form.VisitorOnlineUserPassword.value == "") {
		alert("Please fill in Password!");
		obj_form.VisitorOnlineUserPassword.focus();
		return false;
	}
	if(obj_form.VisitorOnlineUserPassword.value.length < 6 || obj_form.VisitorOnlineUserPassword.value.length >12) {
		alert("Password restricted to 6-12 characters");
		obj_form.VisitorOnlineUserPassword.focus();
		return false;
	}	
	return true;
}