function formCheck(){

	errBoo = true;

	if(document.getElementById('name').value == ''){
		document.getElementById('name').style.backgroundColor = 'yellow';
		errBoo = false;
	}else{
		document.getElementById('name').style.backgroundColor = '#FFFFFF';
	}

	if(document.getElementById('address').value == ''){
		document.getElementById('address').style.backgroundColor = 'yellow';
		errBoo = false;
	}else{
		document.getElementById('address').style.backgroundColor = '#FFFFFF';
	}

	if(document.getElementById('postcode').value == ''){
		document.getElementById('postcode').style.backgroundColor = 'yellow';
		errBoo = false;
	}else{
		document.getElementById('postcode').style.backgroundColor = '#FFFFFF';
	}

	if(document.getElementById('telephone').value == ''){
		document.getElementById('telephone').style.backgroundColor = 'yellow';
		errBoo = false;
	}else{
		document.getElementById('telephone').style.backgroundColor = '#FFFFFF';
	}

	if(document.getElementById('email').value == ''){
		document.getElementById('email').style.backgroundColor = 'yellow';
		errBoo = false;
	}else{
		document.getElementById('email').style.backgroundColor = '#FFFFFF';
	}

	if (errBoo == false)
	{
		alert('Please fill in all yellow fields');
	}
	
	return errBoo
}