function checkFields() 
{

  missinginfo = "";
  if(document.enquiry.txttitle.value == "") 
  {
    missinginfo += "\n     -  Title";
  }  
  if(document.enquiry.txtfname.value == "") 
  {
    missinginfo += "\n     -  First Name";
  } 
  if(document.enquiry.txtsname.value == "") 
  {
    missinginfo += "\n     -  Surname";
  }
  if(document.enquiry.txtemail.value == "") 
  {
    missinginfo += "\n     -  Email";
  }
  if(document.enquiry.txtworkphone.value == "" && document.enquiry.txthomephone.value == "" && document.enquiry.txtmobile.value == "") 
  {
    missinginfo += "\n     -  Phone Number";
  }

if (missinginfo != "") {
missinginfo ="_____________________________\n" +
"You failed to correctly fill in\n" +
missinginfo + "\n_____________________________" +
"\nPlease re-enter and try again!";
alert(missinginfo);
return false;
}
else return true;
}