function mousemove(t,src) { t.className = src + "on"; }
function mousedown(t,src) { t.className = src + "down"; }
function mouseout(t,src) { t.className = src + "off"; }
function mouseclick(t,src) { t.className = src + "on"; }

function Expand() {

	var el = window.event.srcElement.parentElement.parentElement.parentElement;
	var sign = el.children(0).children(0).children(0);

	switch (sign.name) 
	{
		case '-':
			sign.name = '+';
			sign.src = "/image/collapse.gif";
			sign.title = "Развернуть";
			for (var i = 1; i < el.children.length; i++)
				el.children(i).style.display = "none";
			break;
		case '+':
			sign.name = '-';
			sign.src = "/image/expand.gif";
			sign.title = "Свернуть";
			for (var i = 1; i < el.children.length; i++)
				el.children(i).style.display = "";
			break;
	}
}