Invision Free style category viewing

[Uchiha Sasuke]

this code will make it so that when you click on the link inside a board to go back to a category, it will make only that category show, just like how it is in PHPBB, Invision Free, Yabb, and all those boards...

Main Footer

<script>
//Invision Free style category viewing
//Coded by NCGI (Uchiha Sasuke)
BoardNames = new Array()
iTD = document.getElementsByTagName('td');
if (location.href.indexOf('action') ==-1) {
for (t=0;t<iTD.length;t++) {
if (iTD[t].className=="catbg" && iTD[t].colSpan=="5" && iTD[t].parentNode.nextSibling) {
if (iTD[t].parentNode.nextSibling.firstChild.name!="") {
BoardNames.push(iTD[t].parentNode.nextSibling.firstChild.name);}}}}

if (location.href.indexOf('index.cgi#') !=-1) {
iSplit = location.href.split('#')[1];
function doLoneCat() {
for (b=0;b<BoardNames.length;b++) {
if (BoardNames[b]==iSplit) {
for (i=0;i<iTD.length;i++) {
if (iTD[i].colSpan=="5" && iTD[i].className=="catbg" && iTD[i].parentNode.nextSibling) {
if (iTD[i].parentNode.nextSibling.firstChild.name!=BoardNames[b]) {
while (iTD[i].parentNode.nextSibling.nextSibling.firstChild.className!="catbg") {
iTD[i].parentNode.parentNode.removeChild(iTD[i].parentNode.nextSibling.nextSibling);}
iTD[i].parentNode.parentNode.removeChild(iTD[i].parentNode.nextSibling);
iTD[i].parentNode.parentNode.removeChild(iTD[i].parentNode);
doLoneCat();
}}}}}}
doLoneCat();}
</script>