function checkform(form)
{
	if (form.firstname.value == "") 
	{
		alert( "Please provide your first name." );
		form.firstname.focus();
		return false ;
	}
	
	if (form.lastname.value == "") 
	{
		alert( "Please provide your last name." );
		form.lastname.focus();
		return false ;
	}

	if (form.email.value == "") 
	{
		alert( "Please provide your email." );
		form.email.focus();
		return false ;
	}


	if (form.telephone.value == "") 
	{
		alert( "Please provide your surname." );
		form.telephone.focus();
		return false ;
	}
	  
  	return true ;
}