function explanation_folder(name, mode){
	if(mode == "fold") {
		$(name+'-icon_fold').hide();
		$(name+'-explanation').hide();
		$(name+'-icon_expand').show();
		$(name+'-explanation_descr').show();
	} else {
		$(name+"-icon_expand").hide();
		$(name+"-explanation_descr").hide();
		$(name+"-icon_fold").show();
		$(name+"-explanation").show();
	}
}