function validateForm(fObj)
{
	var chk_result = true;
	var msg = "";
	hideAllErrors(fObj);

	for (var i = 0; i < fObj.elements.length; i++)
	{
		if ("usr_pass2" == fObj.elements[i].name) continue;
		if ("usr_phone2" == fObj.elements[i].name) continue;
		if ("lr_account" == fObj.elements[i].name) continue;
		if ("eg_account" == fObj.elements[i].name) continue;
		if ("wm_account" == fObj.elements[i].name) continue;
		if ("usr_id" == fObj.elements[i].name) continue;

		if (0 == fObj.elements[i].value.length)
		{
			msg += displayError(fObj.elements[i], "This field is required.");
			chk_result = false;
		}
	}

	with (fObj)
	{
		if (usr_pass.value.length > 0 && usr_pass.value.length < 6)
		{
			msg += displayError(usr_pass, "The password should contain at least 6 symbols.");
			chk_result = false;
		}

		if (usr_pass.value.length > 0 && usr_pass.value != usr_pass2.value)
		{
			msg += displayError(usr_pass2, "Fields 'Password' and 'Confirm password' contain different values.");
			chk_result = false;
		}

		if (usr_email.value.length > 0 && !(/^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/).test(usr_email.value))
		{
			msg += displayError(usr_email, "Check up correctness of input of an e-mail address.");
			chk_result = false;
		}
	}

	if (msg.length > 0)
		alert("Errors found:\n\n" + msg);

	return chk_result;
}

function displayError(obj, msg)
{
	var errBlock = document.getElementById(obj.id + "-err");
	if (null == errBlock)
	{
		return "  • " + msg + "\n";
	}
	else
	{
		errBlock.innerHTML = msg;
		errBlock.style.display = "block";
		return "";
	}
}

function hideAllErrors(fObj)
{
	for (var i = 0; i < fObj.elements.length; i++)
	{
		var errBlock = document.getElementById(fObj.elements[i].id + "-err");
		if (null != errBlock)
		{
			errBlock.innerHTML = "";
			errBlock.style.display = "none";
		}
	}
}

function showAllErrors(fObj)
{
	for (var i = 0; i < fObj.elements.length; i++)
	{
		var errBlock = document.getElementById(fObj.elements[i].id + "-err");
		if (null != errBlock && errBlock.innerHTML.length != 0)
			errBlock.style.display = "block";
	}
}