function disableLink(aLink) {
	aLink.href = "#";
	aLink.className = "disabled";

	obj = aLink;	
	while (obj) {
		obj = obj.parentNode;
		if (obj.tagName == "TABLE") {
			showHeader(obj);
			break;
		}
	}
}

function showHeader(taHeader) {
	aHeader = eval(taHeader.id.substr(1));
	
	taAnti.style.display = 'none';
	taHard.style.display = 'none';
	taSecurity.style.display = 'none';
	taWeb.style.display = 'none';
	taCD.style.display = 'none';
	taMultimedia.style.display = 'none';
	taVideo.style.display = 'none';
	taComms.style.display = 'none';
	taOCR.style.display = 'none';
	taEducational.style.display = 'none';
	taGames.style.display = 'none';
	taMisc.style.display = 'none';

	taLine.style.display = '';
	taHeader.style.display = '';

	aAnti.className = 'catA';
	aHard.className = 'catA';
	aSecurity.className = 'catA';
	aWeb.className = 'catA';
	aCD.className = 'catA';
	aMultimedia.className = 'catA';
	aVideo.className = 'catA';
	aComms.className = 'catA';
	aOCR.className = 'catA';
	aEducational.className = 'catA';
	aGames.className = 'catA';
	aMisc.className = 'catA';

	aHeader.className = 'disabled';
}