function validateBookFrom(){
	
var msg = "";
var f = "";

if(document.getElementById('town_p').checked == false && document.getElementById('airport_p').checked == false  && document.getElementById('port_p').checked == false && document.getElementById('station_p').checked == false)
{
	msg = "- Please choose pickup location. \n";
	document.getElementById('fromlocmsg').innerHTML = '<img src="images/validation-arrow.png" width="20" height="15" />';
	
	if(f.length == 0){
	f = 'fromlocmsg1';
	}
}
else
{
	document.getElementById('fromlocmsg').innerHTML = '';;
}

if(document.getElementById('town_d').checked == false && document.getElementById('airport_d').checked == false  && document.getElementById('port_d').checked == false && document.getElementById('station_d').checked == false )
{
	msg = msg + "- Please choose dropoff location. \n";	
	document.getElementById('tolocmsg').innerHTML = '<img src="images/validation-arrow.png" width="20" height="15" />';
	
	if(f.length == 0){
	f = 'tolocmsg1';
	}
}
else
{
	document.getElementById('tolocmsg').innerHTML = '';	
}

if(document.getElementById('one_way').checked == false && document.getElementById('return').checked == false)
{
	msg = msg + "- Please choose journey type. \n";	
	document.getElementById('journeytypemsg').innerHTML = '<img src="images/validation-arrow.png" width="20" height="15" />';
	
	if(f.length == 0){
	f = 'journeytypemsg1';
	}
}
else
{
	document.getElementById('journeytypemsg').innerHTML = '';
}

if(document.getElementById('saloon').checked == false && document.getElementById('estate').checked == false  && document.getElementById('mpv').checked == false && document.getElementById('mpvp').checked == false && document.getElementById('8seater').checked == false && document.getElementById('eclass').checked == false && document.getElementById('sclass').checked == false && document.getElementById('other').checked == false)
{
	msg = msg + "- Please choose vehicle. \n";	
	document.getElementById('vehiclemsg').innerHTML = '<img src="images/validation-arrow.png" width="20" height="15" />';
	
	if(f.length == 0){
	f = 'vehiclemsg1';
	}
}
else
{
	document.getElementById('vehiclemsg').innerHTML = '';
}

if(msg.length > 0)
{
	alert('Please fix the following errors: \n' + msg);
	document.getElementById(f).focus();
	return false;
}
else
	return true;

	
}