function TreeView_ClickNode(node,children)
{
	img = node.childNodes[0];
	if (children.style.display == 'none') 
	{
		children.style.display = 'block';
		img.src = node.colImg; 
	}
	else
	{
		children.style.display = 'none';
		img.src = node.expImg;
	}
}