/*  javascript for thisamericanlife season 2 */
//add newsletter
function addSeriesNewsletter( a, rtn, ttl )
{
	var _return = rtn;
	var _title = ttl;
	var _submit = a.getAttribute('href');
	var _params = [ '',
		_submit, '&returnurl=', _return,
		'&returntitle=', escape(_title) 
	]; document.location = _params.join('');
}
//image preloads
var preloadFlag = false;
function preload() {
	var a = new Image();
	a.src= "/site/thisamericanlife/season2/images/nav/home_on.gif";
	a.src= "/site/thisamericanlife/season2/images/nav/schedule_on.gif";
	a.src= "/site/thisamericanlife/season2/images/nav/episodes_on.gif";
	a.src= "/site/thisamericanlife/season2/images/nav/about_on.gif";
	a.src= "/site/thisamericanlife/season2/images/nav/downloads_on.gif";
	a.src= "/site/thisamericanlife/season2/images/nav/email_on.gif";
	preloadFlag = true;
}
function swapImgRestore() {//v3.0
	var i,x,a=document.sr;
	for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function findObj(n, d) {//v4.01
	var p,i,x;
	if(!d) d=document;
	if((p=n.indexOf("?"))>0&&parent.frames.length) {
		d=parent.frames[n.substring(p+1)].document;
		n=n.substring(0,p);
	}
	if(!(x=d[n])&&d.all) x=d.all[n];
	for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
	for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObj(n,d.layers[i].document);
	if(!x && d.getElementById) x=d.getElementById(n);
	return x;
}
function swapImage() {//v3.0
	var i,j=0,x,a=swapImage.arguments;
	document.sr=new Array;
	for(i=0;i<(a.length-2);i+=3)
	if ((x=findObj(a[i]))!=null) {
		document.sr[j++]=x;
		if(!x.oSrc) x.oSrc=x.src;
		x.src=a[i+2];
	}
}
function reloadPage(init) {//reloads the window if Nav4 resized
	if (init==true) with (navigator) {
		if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
			document.pgW=innerWidth;
			document.pgH=innerHeight;
			onresize=reloadPage;
		}
	}
	else if (innerWidth!=document.pgW || innerHeight!=document.pgH) location.reload();
}
reloadPage(true);
function showHideLayers() {//v6.0
	var i,p,v,obj,args=showHideLayers.arguments;
	for (i=0; i<(args.length-2); i+=3) if ((obj=findObj(args[i]))!=null) {
		v=args[i+2];
		if (obj.style) {
			obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v;
		}
		obj.visibility=v;
	}
}
function showHide(whichLayer) {
	if (document.getElementById) {
		//standard
		var style2 = document.getElementById(whichLayer).style;
		style2.display = style2.display? "":"block";
	}
	else if (document.all) {
		//old msie versions
		var style2 = document.all[whichLayer].style;
		style2.display = style2.display? "":"block";
	}
	else if (document.layers) {
		//nn4
		var style2 = document.layers[whichLayer].style;
		style2.display = style2.display? "":"block";
	}
}

// email/wireless script
function membership_pop(Loc) {
	this.window.name = "save_params";
	membership=window.open(Loc,"membership","toolbar=no,scrollbars=yes,directories=no,resizable=yes,menubar=no,width=800,height=600,top=20,left=200,screeny=20,screenx=200");
	membership.focus();
}