function preload() { if (document.images) { if (typeof(document.F) == 'undefined'){ document.F = new Object(); } document.F.loadedImages = new Array(); var argLength = preload.arguments.length; for(arg=0;arg<argLength;arg++) { document.F.loadedImages[arg] = new Image(); document.F.loadedImages[arg].src = preload.arguments[arg]; } } }
function imageswap(daImage, daSrc){ var objStr,obj; if(document.images){ if (typeof(daImage) == 'string') { objStr = 'document.' + daImage; obj = eval(objStr); obj.src = daSrc; } else if ((typeof(daImage) == 'object') && daImage && daImage.src) { daImage.src = daSrc; } } }
var topon = new Array();
var toggleInterval = 0;
function toggle(target,onoff){
	if(document.getElementById(target)){
		if(currentdiv != undefined){
			changeclass(currentdiv + 'o','wrapper');	
			document.getElementById(currentdiv).style.display = 'none';
		}

		if(onoff == 1){	
			document.getElementById(target).style.display = 'inline';
			changeclass(target + 'o','wrapper_on');	
		} else {
			document.getElementById(target).style.display = 'none';
			changeclass(target + 'o','wrapper');	
		}
	
		currentdiv = target;
	}
}

function global_toggle (targetdiv){
	if(!topon[targetdiv]){
		topon[targetdiv] = true;
		$('#'+targetdiv).css({display: 'block'});
		$('#'+targetdiv).hide();
		$('#'+targetdiv).fadeIn('fast');
		document.getElementById(targetdiv+'_but').className = 'sel';
		toggleInterval = setInterval(function () { global_toggle(targetdiv,false) }, 60000);
	} else {
		topon[targetdiv] = false;
		clearInterval(toggleInterval);
		document.getElementById(targetdiv+'_but').className = '';
		$('#'+targetdiv).fadeOut('fast', function () { $('#'+targetdiv).css({display: 'none'}) });
	}
}

function global_mailform_check() {
	var go = true;
	var msg = 'Please double-check the following: ';
	if(document.getElementById('myusername').value == '' || document.getElementById('mydomain').value == '' || document.getElementById('mydomain').value.indexOf('.') == -1){
		msg += '\nYour e-mail address';
		go = false;
	}
	if(document.getElementById('friendusername').value == '' || document.getElementById('frienddomain').value == '' || document.getElementById('frienddomain').value.indexOf('.') == -1){
		msg += '\nYour friend\'s e-mail address';
		go = false;
	}
	if(!go){
		alert(msg);
	}
	return go;
}

function networksubmit (idx){
	if(idx == 0){
		location.href = "http://www.stumbleupon.com/submit?url="+encodeURIComponent(location.href)+"&title="+encodeURIComponent(document.title);
	}
	if(idx == 1){
		location.href = "http://slashdot.org/bookmark.pl?url="+encodeURIComponent(location.href)+"&title="+encodeURIComponent(document.title);
	}
	if(idx == 2){
		location.href = "http://www.facebook.com/share.php?u="+encodeURIComponent(location.href)+"&t="+encodeURIComponent(document.title);
	}
	if(idx == 3){
		location.href = "ttp://reddit.com/submit?url="+encodeURIComponent(location.href);
	}
	if(idx == 4){
		location.href = "http://digg.com/submit?phase=2&url="+encodeURIComponent(location.href)+"&title="+encodeURIComponent(document.title)+"&topic=television";
	}
	if(idx == 5){
		location.href = "http://del.icio.us/post?v=4&noui&jump=close&url="+encodeURIComponent(location.href)+"&title="+encodeURIComponent(document.title);
	}
}


function makenav() {
topon['global_email'] = false;
topon['global_share'] = false;

document.write('<div id="top_gtop"><div id="sbox"><form action="/wgbh/pages/frontline/gsearch.html" method="get" name="searchform">SEARCH FRONTLINE &nbsp; <input type="text" name="q" class="gtop_sbx" \/><input type="image" alt="submit" width="20" height="20" src="\/wgbh\/pages\/frontline\/art\/08global\/searchbutton.png" style="vertical-align: middle; margin-top: -2px;"\/><\/form><\/div>');
document.write('<ul class="gtop_main"><li><a href="javascript:void(0);" onclick="global_toggle(\'global_email\');" id="global_email_but"><img src="\/wgbh\/pages\/frontline\/art\/08global\/mail.png" width="20" height="20" alt="E-MAIL THIS PAGE" align="middle" \/>E-MAIL THIS PAGE</a></li><li><a href="javascript:void(0)" onclick="global_toggle(\'global_share\');" id="global_share_but"><img src="\/wgbh\/pages\/frontline\/art\/08global\/share.png" width="20" height="20" alt="SHARE THIS PAGE" \/>SHARE THIS PAGE<\/a><\/li><\/ul><\/div>');
document.write('<div id="global_email"><div class="gtop_mailform">');
document.write('<form action="http:\/\/www.pbs.org\/cgi-registry\/tell_a_friend.cgi" onsubmit="return global_mailform_check();" method="post">');
document.write('<input type="hidden" name="url_to_send" value="'+location.href+'" \/>');
document.write('<input type="hidden" name="location" value="'+location.pathname+'" \/>');
document.write('<input type="hidden" name="subjectline" value="You have been sent a link from FRONTLINE" \/>');
document.write('<input type="hidden" name="error_template" value="\/wgbh\/pages\/frontline\/us\/mailfrienderror.html" \/>');
document.write('<p>Your e-mail address<br \/>');
document.write('<input type="text" name="myusername" maxlength="30" value="" class="gtop_mail" id="myusername" \/>&nbsp;<span>@<\/span>&nbsp;<input type="text" name="mydomain" id="mydomain" class="gtop_mail" maxlength="30" value="" \/><\/p>');
document.write('<p>Your friend\'s e-mail address<br \/><input type="text" name="friendusername" id="friendusername" class="gtop_mail" maxlength="30" value="" \/>&nbsp;<span>@<\/span>&nbsp;<input type="text" name="frienddomain" id="frienddomain" class="gtop_mail" maxlength="30" value="" \/><\/p><p>brief message (optional)');
document.write('<br \/><textarea name="content" rows="3" class="gtop_mailwide" ><\/textarea><\/p>');
document.write('<p><input type="image" alt="submit" style="float: right;" width="20" height="20" src="\/wgbh\/pages\/frontline\/art\/08global\/searchbutton.png"\/><span>Information you supply on this page will only be used to send this link.<\/span><\/p>');
document.write('<\/form><\/div><\/div>');
document.write('<div id="global_share"><div class="gtop_share">');
document.write('<p><a href="javascript:void(0)" onclick="networksubmit(0);"><img src="/wgbh/pages/frontline/art/08global/p_social3.gif" width="16" height="16" alt="STUMBLEUPON" \/>STUMBLEUPON<\/a><\/p>');
document.write('<p><a href="javascript:void(0)" onclick="networksubmit(1);"><img src="/wgbh/pages/frontline/art/08global/p_social5.gif" width="16" height="16" alt="slashdot" \/>SLASHDOT<\/a><\/p>');
document.write('<p><a href="javascript:void(0)" onclick="networksubmit(2);"><img src="/wgbh/pages/frontline/art/08global/p_social4.gif" width="16" height="16" alt="facebook" \/>facebook<\/a><\/p>');
document.write('<p><a href="javascript:void(0)" onclick="networksubmit(3);"><img src="/wgbh/pages/frontline/art/08global/p_social2.png" width="16" height="16" alt="reddit" \/>reddit<\/a><\/p>');
document.write('<p><a href="javascript:void(0)" onclick="networksubmit(4);"><img src="/wgbh/pages/frontline/art/08global/p_social1.gif" width="16" height="16" alt="digg" \/>DIGG<\/a><\/p>');
document.write('<p><a href="javascript:void(0)" onclick="networksubmit(5);"><img src="/wgbh/pages/frontline/art/08global/p_social0.gif" width="16" height="16" alt="del.icio.us" \/>DEL.ICIO.US<\/a><\/p>');
document.write('<\/div><\/div>');

}

function subtitle(targetdiv,target){ if(document.getElementById(targetdiv)){ document.getElementById(targetdiv).innerHTML = target; } }