$(document).ready(function(){
	$("#tree img[alt=\"+\"]").click(expand);

	function expand()
	{
		var ch = $(this.parentNode).next();
		if(ch.css("display") == "none")
		{
			$(this).attr("src", "/schema/menu_shown.gif");
			ch.slideDown(500);
		}
		else if(ch.css("display") == "block")
		{
			$(this).attr("src", "/schema/menu_hidden.gif");
			ch.slideUp(500);
		}
	}
});


var obj = null;
var id = 0;

function showt(v)
{
	obj = v;
	id = window.setTimeout("showhide(\"block\")", 700);
}

function hidet(v)
{
	obj = v;
	window.clearTimeout(id);
	showhide("none");
}

function showhide(action)
{
	var oCh = obj.childNodes;
	for (var i = 0; i < oCh.length; i++)
		if (oCh[i].className == "rate")
			oCh[i].style.display = action;
}