function TabsTreeMenu_OnClick(event)
{
	var obj;
	
	if (event.srcElement)
		obj = event.srcElement;
	else
		obj = event.target;
	
	if (obj.getAttribute("HasChild"))
	{
		if (obj.nodeName == "IMG")
			cobj = obj.parentNode.parentNode.nextSibling;
		else	
			cobj = obj.parentNode.nextSibling; 

		cobj.style.display = (cobj.style.display == "none" ? "block" : "none");

		if (obj.nodeName == "IMG" || ((obj = obj.firstChild).nodeName == "IMG"))
		{
			if (cobj.style.display == "none")
				obj.src=TTM_IMG_Collapse.src;
			else
				obj.src=TTM_IMG_Expand.src;		
		}			
	}
	
	return false;
}