function hasClass(ele,cls) {
	return ele.className.match(new RegExp('(\\s|^)'+cls+'(\\s|$)'));
}
function addClass(ele,cls) {
	if (!this.hasClass(ele,cls)) ele.className += " "+cls;
}
function removeClass(ele,cls) {
	if (hasClass(ele,cls)) {
		var reg = new RegExp('(\\s|^)'+cls+'(\\s|$)');
		ele.className=ele.className.replace(reg,' ');
	}
}

function showInfoSP() {
var lf = document.getElementById('showInfoSP');
  if (hasClass(lf,'hidden')) {
    removeClass(lf,'hidden');
  }
}
function hideInfoSP() {
var lf = document.getElementById('showInfoSP');
  if (! hasClass(lf, 'hidden')) {
        addClass(lf, 'hidden');
  }
}