function togglecatmenu(nodeid)
{
	if ((!DOM || Opera56 || Konqueror22) && !IE4) {
		return;
	}
	layersMoved = 0;
	parseExpandString();
	parseCollapseString();
	if (!IE4) {
		sonLayer = document.getElementById('jt' + nodeid + 'son');
		nodeLayer = document.getElementById('jt' + nodeid + 'node');
		folderLayer = document.getElementById('jt' + nodeid + 'folder');
	} else {
		sonLayer = document.all('jt' + nodeid + 'son');
		nodeLayer = document.all('jt' + nodeid + 'node');
		folderLayer = document.all('jt' + nodeid + 'folder');
	}
	if (sonLayer.style.display == 'none') {
		sonLayer.style.display = 'block';
		if (nodeLayer.src.indexOf('images/tree_expand.png') > -1) {
			nodeLayer.src = 'images/tree_collapse.png';
		} else if (nodeLayer.src.indexOf('images/tree_expand_first.png') > -1) {
			nodeLayer.src = 'images/tree_collapse_first.png';
		} else if (nodeLayer.src.indexOf('images/tree_expand_corner.png') > -1) {
			nodeLayer.src = 'images/tree_collapse_corner.png';
		} else {
			nodeLayer.src = 'images/tree_collapse_corner_first.png';
		}
		folderLayer.src = 'images/tree_folder_open.png';
		phplm_expand[nodeid] = 1;
		phplm_collapse[nodeid] = 0;
	} else {
		sonLayer.style.display = 'none';
		if (nodeLayer.src.indexOf('images/tree_collapse.png') > -1) {
			nodeLayer.src = 'images/tree_expand.png';
		} else if (nodeLayer.src.indexOf('images/tree_collapse_first.png') > -1) {
			nodeLayer.src = 'images/tree_expand_first.png';
		} else if (nodeLayer.src.indexOf('images/tree_collapse_corner.png') > -1) {
			nodeLayer.src = 'images/tree_expand_corner.png';
		} else {
			nodeLayer.src = 'images/tree_expand_corner_first.png';
		}
		folderLayer.src = 'images/tree_folder_closed.png';
		phplm_expand[nodeid] = 0;
		phplm_collapse[nodeid] = 1;
	}
	saveExpandString();
	saveCollapseString();
}