function CheckForm()
{
	var objform = document.formwriteReview
	
	//check compulsory fields
	if(objform.txtName.value == '')
	{
		alert('Please enter your name.')
		objform.txtName.focus();
		return false;
	}

	if (!CheckName(objform.txtName.value))
	{
		alert('Name format is invalid, please enter again.')
		objform.txtName.focus();
		return false;	
	}

	if(objform.txtEmail.value == '')
	{
		alert('Please enter your email address.')
		objform.txtEmail.focus();
		return false;
	}
	if(objform.txtEmail.value.indexOf('.') == -1 || objform.txtEmail.value.indexOf('@') == -1)
	{
		alert('This email address is not valid.');
		objform.txtEmail.focus();
		objform.txtEmail.select();
		return false;
	}	
	
	if(objform.txtRating.value == '')
	{
		alert('Please rate this product.');
		return false;
	}
	if(objform.txtReview.value == '')
	{
		alert('Please enter your review.');
		objform.txtReview.focus();
		return false;
	}
	objform.FlagProcess.value = '1';
	return true;
	
}


function CheckName(value)
{
	var bValid = /^[A-Z ]+$/i.test(value)

	if(bValid== true)
		return true;
	else
		return false;
}