var global_vc_show_flag = false;
/**
 * 验证登录表单
 * @param form  - 表单对象
 */
function validateCASLoginForm(form) {
	var username = form.username;
	var password = form.password;
	var validateCode = form.validateCode;
	var buffer = new Array();
	var fieldName = "";
	if (username.value == "") {
		buffer.push("Please enter your member ID ");
		if (fieldName == "") {
			fieldName = username.name;
		}
	}
	if (password.value == "") {
		buffer.push("Please enter your password.");
		if (fieldName == "") {
			fieldName = password.name;
		}
	}
	if (validateCode.value == "") {
		buffer.push("Please enter the validate code.");
		if (fieldName == "") {
			fieldName = validateCode.name;
		}
	}
	if (buffer.length > 0) {
		alert(buffer.join("\n\n"));
		form.elements[fieldName].focus();
		return false;
	}
	return true;
}
function validateCASLoginForm2(form) {
	var username = form.username;
	var password = form.password;
	var validateCode = form.validateCode;
	var buffer = new Array();
	var fieldName = "";
	if (username.value == "") {
		buffer.push(input_username);
		if (fieldName == "") {
			fieldName = username.name;
		}
	}
	if (password.value == "") {
		buffer.push(input_password);
		if (fieldName == "") {
			fieldName = password.name;
		}
	}
	if (validateCode.value == "") {
		buffer.push(input_vcode);
		if (fieldName == "") {
			fieldName = validateCode.name;
		}
	}
	if (buffer.length > 0) {
		alert(buffer.join("\n\n"));
		form.elements[fieldName].focus();
		return false;
	}
	return true;
}