function ShowSelectedNodes(){
	// Get the node selected.
	var node = document.getElementById("NodeSelected");
	if(node != null){
		//Get the node selected parent node name.
		var nodeId = node.getAttribute("name");
		var li ;
		// Show the sibling nodes.
		var sul;
		sul = node.getElementsByTagName("ul");
		if(sul.length > 0 ){
			sul[0].className = "ParentNodeSelected"
		}
		//Show it parent tree.
		while(document.getElementById(nodeId) != null ){
            li = document.getElementById(nodeId);
            if(li != null){
                // Highlight the parent it.
                if(li.getAttribute("name") == "P0"){
                    li.getElementsByTagName("a")[0].className = "ParentNodeColour";
                }
                var ul = li.getElementsByTagName("ul");
                if(ul.length > 0){
                    ul[0].className = "ParentNodeSelected"
                }
                nodeId = li.getAttribute("name");
            }
            else{
                break;
            }
        }
    }
}