dom.event.addEventListener(window, 'load', init);

function init() {
	switchMenu();
}

function switchMenu() {
	
	var ps3 = document.getElementById('ps3');
	var xbox = document.getElementById('xbox');
	var pc = document.getElementById('pc');
	
	var ps3sub = ps3.getElementsByTagName('UL').item(0);
	var xboxsub = xbox.getElementsByTagName('UL').item(0);
	var pcsub = pc.getElementsByTagName('UL').item(0);
	
	if(ps3sub.className == 'navis') {
		var ps3navi_1 = ps3sub.getElementsByTagName('LI').item(1);
		var ps3navi_2 = ps3sub.getElementsByTagName('LI').item(2);
		
		ps3navi_1.style.cursor = 'pointer';
		ps3navi_2.style.cursor = 'pointer';
		
		ps3navi_1.onclick = function() {
			ps3.style.display = 'none';
			xbox.style.display = 'block';
			pc.style.display = 'none';
		}
		ps3navi_2.onclick = function() {
			ps3.style.display = 'none';
			xbox.style.display = 'none';
			pc.style.display = 'block';
		}
	}
	
	if(xboxsub.className == 'navis') {
		var xboxnavi_1 = xboxsub.getElementsByTagName('LI').item(0);
		var xboxnavi_2 = xboxsub.getElementsByTagName('LI').item(2);
		
		xboxnavi_1.style.cursor = 'pointer';
		xboxnavi_2.style.cursor = 'pointer';
		
		xboxnavi_1.onclick = function() {
			ps3.style.display = 'block';
			xbox.style.display = 'none';
			pc.style.display = 'none';
		}
		xboxnavi_2.onclick = function() {
			ps3.style.display = 'none';
			xbox.style.display = 'none';
			pc.style.display = 'block';
		}
	}
	
		if(pcsub.className == 'navis') {
		var pcnavi_1 = pcsub.getElementsByTagName('LI').item(0);
		var pcnavi_2 = pcsub.getElementsByTagName('LI').item(1);
		
		pcnavi_1.style.cursor = 'pointer';
		pcnavi_2.style.cursor = 'pointer';
		
		pcnavi_1.onclick = function() {
			ps3.style.display = 'block';
			xbox.style.display = 'none';
			pc.style.display = 'none';
		}
		pcnavi_2.onclick = function() {
			ps3.style.display = 'none';
			xbox.style.display = 'block';
			pc.style.display = 'none';
		}
	}
	
	var pcInfo = $("pcInfo");
	var enviro = $("environment");
	
	var pcBtn1 = $Tag("P",pcInfo);
	var pcBtn2 = $Tag("P",enviro);
	
	enviro.style.display = "none";

	dom.event.addEventListener(pcBtn1.item(0), 'click', sw);
	dom.event.addEvent(pcBtn2.item(1), 'click', ws);

}

function sw() {
	$("pcInfo").style.display = "none";
	$("environment").style.display = "block";
}
function ws() {
	$("pcInfo").style.display = "block";
	$("environment").style.display = "none";
}