function check_form(fobj){

var returnval = "";

if(fobj.elements["name"].value == ""){
  returnval = returnval + "   -- Your Name\n";
}

if(fobj.email.value == ""){
  returnval = returnval + "   -- Your Email\n";
}

if(fobj.delivery_target.selectedIndex < 1){
  returnval = returnval += "   -- Type of Enquiry\n";
}

if(fobj.subject.value == ""){
  returnval = returnval + "   -- Subject\n";
}

if(fobj.message.value == ""){
  returnval = returnval + "   -- Message\n";
}

if(returnval != ""){
  returnval = "Please fill in the following information before sending:\n\n" + returnval;
  alert(returnval);
  return false;
}
else{
  return true;
}

}