var currentMode;

function onChangeBrowseBy() {
  var formObj = frames['img_assist_header'].document.forms[0];
  browse = formObj['edit[browse]'].value;
	frames['img_assist_main'].window.location.href = BASE_URL + 'index.php?q=img_assist/thumbs/' + browse;
}

function onClickUpload() {
  frames['img_assist_main'].window.location.href = BASE_URL + 'index.php?q=img_assist/upload';
}

function onClickStartOver() {
  frames['img_assist_main'].window.location.href = BASE_URL + 'index.php?q=img_assist/thumbs/myimages';
}

function updateCaption() {
  var caption = frames['img_assist_main'].document.getElementById("caption");
  var title = frames['img_assist_main'].document.img_assist['edit[title]'].value;
  var desc = frames['img_assist_main'].document.img_assist['edit[desc]'].value;
  if (desc != '') {
    title = title + ': ';
  }
  caption.innerHTML = '<strong>' + title + '</strong>' + desc;
}

function onChangeHeight() {
  var formObj = frames['img_assist_main'].document.forms[0];
  var aspect = formObj['edit[aspect]'].value;
  var height = formObj['edit[height]'].value;
  formObj['edit[width]'].value = Math.round(height * aspect);
}

function onChangeWidth() {
  var formObj = frames['img_assist_main'].document.forms[0];
  var aspect = formObj['edit[aspect]'].value;
  var width = formObj['edit[width]'].value;
  formObj['edit[height]'].value = Math.round(width