function toggle(obj1,obj2) {
	var el = document.getElementById(obj1);
	var imge = document.getElementById(obj2);
	if ( el.style.display != 'none' ) {
		el.style.display = 'none';
		imge.style.backgroundImage="url(/templates/images/icon_green-plus.gif)";
	}else {
		el.style.display = '';
		imge.style.backgroundImage="url(/templates/images/icon_green-minus.gif)";
	}
};