var guru = document.getElementById('guru');
// Firefox 2.0 doesn't take border-color, but returns border-top-color fine
-var color = document.defaultView.getComputedStyle(guru,null).getPropertyValue('border-top-color');
+var color = document.defaultView.getComputedStyle(guru, null).getPropertyValue('border-top-color');
function guruOn() {
guru.style.setProperty('border-color', color, '');