var state = 'none';

function showhide(layer_ref)
{
	if(state == 'block')
	{
		state = 'none';
	} else{
		state = 'block';
	}

	if(document.all){ //IS IE 4 or 5 (or 6 beta)
		eval("document.all." +layer_ref+ ".style.display = state");
	}
	if (document.layers) { //IS NETSCAPE 4 or below
		document.layers[layer_ref].display = state;
	}
	if (document.getElementById &&!document.all) {
		hza = document.getElementById(layer_ref);
		hza.style.display = state;
	}
}

function changeText(elemId, text)
{
	document.getElementById(elemId).innerHTML=text;
}


function createCookie(name,value,millis) {
	if (millis) {
		var date = new Date();
		date.setTime(date.getTime() + millis);
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/; domain=.wokai.org";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}