// Universal Stylesheet Detector

function rollIn(imgName) {
  if (document.images[imgName]) {
     document.images[imgName].src=eval(imgName + "_on.src");
  }
}

function rollOut(imgName) {
  if (document.images[imgName]) {
     if ((selected != imgName) && (subselected != imgName)) document.images[imgName].src=eval(imgName + "_off.src");
  }
}

function down(imgName) {
  last = selected;
  if (last) {
  	rollOut(last);
  }
  selected = imgName;
}

function correct(imgName) {
  if (document.images[imgName]) {
     document.images[imgName].src=eval(imgName + "_off.src");
	 selected = null;
  }
}

function setSel(imgName) {
  selected = imgName;
}

var selected = '';

var subselected = '';