var sign_toggle_on = "+";
var sign_toggle_off = "-";

function getObject(id) {
	if (document.all) {return document.all[id];}
	else {return document.getElementById(id); }
}

function toggle(link, divId){
	var lText = link.innerHTML;
	var d = getObject(divId);

	if (lText == sign_toggle_on) {
		d.style.display = 'block';
//		d.innerHTML = '<TD>&nbsp;</TD>';
		link.innerHTML = sign_toggle_off;
	}
	else { 
		d.style.display = 'none';
		link.innerHTML = sign_toggle_on;
	}
}