function showSubCat(obj) {
divArray = document.getElementById('subcat').getElementsByTagName('div');
for (var i = divArray.length-1; i >= 0; i--) {
divArray[i].style.display = 'none';
}
var el = document.getElementById(obj);
if ( el.style.display != 'none' ) {
el.style.display = 'none';
}
else {
el.style.display = '';
}
}


function LinkColor(){
linkArray = document.getElementById('cat').getElementsByTagName('a');
for (var i = linkArray.length-1; i >= 0; i--) {
linkArray[i].style.color = '#f5f5f5';
}
}


function Cat(cat,subcat) {
divArray = document.getElementById('cat').getElementsByTagName('td');
for (var i = divArray.length-1; i >= 0; i--) {
divArray[i].style.backgroundColor = '#414142';
}
LinkColor();
cat.style.backgroundColor='#f5f5f5';
cat.style.color='#474747';
cat.getElementsByTagName('a')[0].style.color='#474747';
showSubCat(subcat);
}