//Validation for the maintain plans screen

function isValid(theForm)
{
	var retVal = true;
	var strMsg = '';

	if(theForm.txtForename.value.length < 1) 
	{
		strMsg = strMsg + 'You have not entered a first name\n';
		retVal = false;
	}
	if(theForm.txtSurname.value.length < 1) 
	{
		strMsg = strMsg + 'You have not entered a last name\n';
		retVal = false;
	}
	if(theForm.txtEMail.value.length < 1) 
	{
		strMsg = strMsg + 'You have not entered your email address\n';
		retVal = false;
	}
	if(theForm.txtEMailFriend.value.length < 1) 
	{
		strMsg = strMsg + 'You have not entered your friends email address\n';
		retVal = false;
	}
	
	if(!retVal)
	{
		   alert(strMsg);
	}    
	return retVal;
}