function navOver(targ,mode) {
  targ.className=	mode ? 'navOn' : 'navOff';
  return true;
}

function filesChosen(form) {
  var msg =	new Array();
  if (form.name.value=="") {
    msg[msg.length] =	"* We need to know your name.";
  }
  if (form.email.value+form.phone.value=="") {
    msg[msg.length] =	"* We need your phone number or email address";
  }
  
  if (form.file1.value+form.file2.value+form.file3.value+form.file4.value=="") {
    msg[msg.length] =	"* You haven't selected any files to upload.";
  }
  if (msg.length) {
    alert("ERROR\n\n" + msg.join("\n") + "\n\nPlease make corrections and try again.")
    return false;
  }
  form.add.value=" Uploading Files... ";
  form.add.disabled=true;
  return true;
}