function nodeClick(context){
      	var prevClass = context.parentNode.className;
         toggleElementClass('active', context.parentNode);
        toggleElementClass('inactive', context.parentNode);
        if(context.parentNode.innerHTML.toLowerCase().indexOf("<li>") == -1 && prevClass == 'treenode inactive'){
        	//we need to load the children
        	folderId = context.id
        	context.parentNode.innerHTML += "<img id='loading"+folderId+"' src='plugins/WemagTreeBrowsePlugin/images/loading.gif'></img>";
        	$.get("action.php?kt_path_info=demo.WemagTreeBrowsePlugin.actions.folder.tree&subtree=1&fFolderId="+context.id,function(data){
        		$("img#loading"+folderId).remove();
        		$("li#"+folderId).append(data);
    
        	} );
        }	
      }