//VALIDATION
function CheckForm()
{	
	var message = "";
	
	//PUPPY SESSIONS
	//No boxes ticked
	if ((document.frmPuppySession.chkSPS1.checked == false) && 
		(document.frmPuppySession.chkSPS2.checked == false) &&
		(document.frmPuppySession.chkSPS3.checked == false) &&
		(document.frmPuppySession.chkSPS4.checked == false))
		{
			message = message + "Please indicate which Puppy Socialisation session(s) you wish to book, by ticking the appropriate box or boxes.\n";
		}
		
	if ( message.length > 0 ) 
		{
	   	alert( message );
		return false;
		}
	else {
		return true;
		}
}

function doSubmit()
{
	if (CheckForm())
	{
		document.forms[0].submit();
	}
}