Example of what not to do when writing jQuery code (well it begins by following js is a hack... pretty explicit...)

jquery-badbad-code.js

// the following javascript is a hack to display a "file" image instead of a "folder" image
// when an entity has no children to display.
var ulList = $('ul');
for (i=0; i<ulList.length; i++) {
	var ulEl =  ulList[i];
	if ($('li[class!=liToHide]', ulEl).length == 0) {
		var spanEl = $(ulEl).prev().prev();
		var imgList = $('img', spanEl);
		$(imgList[0]).attr('src', Constants.LI_IMG_URL);
		$(imgList[1]).attr('src', Constants.FILE_IMG_URL);
	}
}