//
// control kisei information tab(kisei, sonota, winter_kisei, winter_road)
//
//
var panels = {'kisei': 1,
	      'sonota': 2,
	      'winter_kisei': 3,
	      'winter_road': 4};
	      
var activePanel = 'kisei';

function initTab(panel) {
    if (panel != undefined) {
	activePanel = panel; 
    }

    for (key in panels) {
	if (key == activePanel) {
	    j$('#treeMenu' + panels[key]).show();
	    toggleImage(key, 'over');
	} else {
	    j$('#treeMenu' + panels[key]).hide();
	    toggleImage(key);
	}
    }

    //
    // other ways conrol
    //
    if (panels[activePanel] < 3) {
	j$('#otherway').hide();
    } else {
	j$('#otherway').show();
    }
}


function toggleImage(base, ev) {
    var suffix = '.jpg';

    if (ev == 'over') {
	suffix = '_on.jpg';
    } else {
	if (base == activePanel) {
	    return;
	}
    }

    j$('#' + base).attr('src', '../img/map/' + base + suffix);
}


function switchPanel(panel) {
    if (panel == activePanel) {
	return;
    }

    activePanel = panel;
    initTab();
}