function toggle(obj) {
	var element1 = document.getElementById(obj);
	
	if ( element1.style.display != 'none' ) {
		element1.style.display = 'none';
		element1.style.visibility = 'hidden'
		var element2 = document.getElementById(obj).value;
		var element3 = obj + 'Icon';
		document.getElementById(element3).innerHTML="+";
	}
	else {
		element1.style.display = 'block';
		element1.style.visibility = 'visible';
		var element2 = document.getElementById(obj).value; 
		var element3 = obj + 'Icon';
		document.getElementById(element3).innerHTML="-";
	}
}

function toggleCollapse() {
	for (var i=1; i<10; i++) 
	{
		var element1 = 'group' + i;
		var element2 = document.getElementById(element1);	
		if (element2) {
				
				element2.style.display = 'none';
				element2.style.visibility = 'hidden';
				var element3 = 'group' + i + 'Icon';
				document.getElementById(element3).innerHTML="+";
			}
	}
}

function toggleExpand() {
	for (var i=1; i<10; i++) 
	{
		var element1 = 'group' + i;
		var element2 = document.getElementById(element1);
	
		if (element2) {
				element2.style.display = 'block';
				element2.style.visibility = 'visible';
				var element3 ='group' + i + 'Icon';
				document.getElementById(element3).innerHTML="-";
			}
	}
}