// JavaScript Document
function validateForm(enquiry)
{

if(""==document.forms.enquiry.Name.value)
{
  alert("Please enter your name");
  document.forms.enquiry.Name.focus();
  return false;
}

if(""==document.forms.enquiry.Email.value)
{
  alert("Please enter a valid email address");
  document.forms.enquiry.Email.focus();
  return false;
}

if(""!=document.forms.enquiry.Email.value)
{
  var x = document.forms[0].Email.value;
  var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
  if (filter.test(x)) 
  {
     //email is fine
  }
  else
  { 
    alert("Please enter a valid email address");
    document.forms.enquiry.Email.focus();
    return false;
  }
}

if(""==document.forms.enquiry.Comments.value)
{
  alert("Please enter an enquiry");
  document.forms.enquiry.Comments.focus();
  return false;
}

}