function checkscript()
{
    if (document.requestform.name.value==0)
  {
    alert('Please enter name');
    document.requestform.name.focus;
	document.getElementById('name_label').className = 'error'; 
    return false;
  }
  
 
  if (document.requestform.email.value==0)
  {
    alert('Please enter email');
    document.requestform.email.focus;
	document.getElementById('email_label').className = 'error'; 
    return false;
  }
 if (document.requestform.tel.value==0)
  {
    alert('Please enter telephone number');
    document.requestform.tel.focus;
	document.getElementById('tel_label').className = 'error'; 
    return false;
  }
  if (document.requestform.location.value==0)
  {
    alert('Please enter location');
    document.requestform.location.focus;
	document.getElementById('location_label').className = 'error'; 
    return false;
  }
  if (document.requestform.enquiry.value==0)
  {
    alert('Please enter enquiry');
    document.requestform.enquiry.focus;
	document.getElementById('enquiry_label').className = 'error'; 
    return false;
  }
  

// all checks passed return true
  return true;
}