function toggleHeadNaviItem(obj) {
			
	if(document.getElementById(obj.id).className == "head-navi-item") {
		document.getElementById(obj.id).className = "head-navi-item-active";
	}
	else {
		document.getElementById(obj.id).className = "head-navi-item";
	}
}

function toggleColumNaviItem(obj) {
			
	if(document.getElementById(obj.id).className == "columNavi-item") {
		document.getElementById(obj.id).className = "columNavi-item-active";
	}
	else {
		document.getElementById(obj.id).className = "columNavi-item";
	}
}