var objListState    = new Object();
var __PREFECTURES   = new Array('Osaka', 'Kyoto', 'Hyogo', 'Nara', 'Wakayama', 'Aichi', 'Tokyo');
var objOpenedImages = new Object;

for (i=0; i<__PREFECTURES.length; i++) {
	objOpenedImages[__PREFECTURES[i]]     = new Image();
	objOpenedImages[__PREFECTURES[i]].src = './img/mark_' + __PREFECTURES[i].toLowerCase() + '2.gif';
}


function changeListState(lid)
{
	var mark = document.getElementById('mark' + lid);
	var elm  = document.getElementById('list' + lid);
	
	if (!objListState[lid]) {
		objListState[lid] = true;
		mark.src = objOpenedImages[lid].src;
		elm.style.display = 'block';
	}
	else {
		objListState[lid] = false;
		elm.style.display = 'none';
		mark.src = './img/mark_' + lid.toLowerCase() + '.gif';
	}
}