function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
	var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
	if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_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=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function submit_email_signup() {
	if (btp_email_signup.email.value == '') {
		alert ("Please enter your e-mail address.");
		btp_email_signup.email.focus();
	} else {
		document.btp_email_signup.submit()
	}
}

function open_video(theURL) { 
  window.open(theURL,'ProducerClip','status,height=460,width=475,scrollbars=no,resizable=no,toolbar=no');
}

function open_flash_video(theURL) { 
  window.open(theURL,'ProducerClip','status,height=665,width=765,scrollbars=no,resizable=no,toolbar=no');
}

function flashvideo(mod,pkg,seg) {
	
	if ((pkg == "") || (seg == "")) {
		window.open(mod,'ProducerClip','status,height=460,width=475,scrollbars=no,resizable=no,toolbar=no');
	} else {
		var newvideolink = 'http://www.pbs.org/newshour/video/module.html?mod='+mod+'&pkg='+pkg+'&seg='+seg;
		window.open(newvideolink,'ProducerClip','status,height=665,width=765,scrollbars=no,resizable=no,toolbar=no');
	}
} 

function toggleRegion(state) {
	if (document.getElementById) {
		var RegionLink = document.getElementById("RegionLink");
		RegionLink.setAttribute("href", "http://www.pbs.org/newshour/region/index.html"); // get rid of the href
		var menu = document.getElementById("gotoRegion").firstChild;
		// Make sure the firstChild is an HTML tag and nothing else
		while (menu.nodeType != 1) { //nodeType 1 is HTML element
			menu = menu.nextSibling; // assign next sibling instead
		}
		setElementClass(RegionLink, state);
		setElementClass(menu, state);
		if (document.getElementById("searchType")) {
			if (state == "active") { 
				document.getElementById("searchType").style.visibility = "hidden";
			} else {
				document.getElementById("searchType").style.visibility = "visible";
			}
		}
	}
}

function toggleTopic(state) {
	if (document.getElementById) {
		var TopicLink = document.getElementById("TopicLink");
		TopicLink.setAttribute("href", "http://www.pbs.org/newshour/topic/index.html"); // get rid of the href
		var menu = document.getElementById("gotoTopic").firstChild;
		// Make sure the firstChild is an HTML tag and nothing else
		while (menu.nodeType != 1) { //nodeType 1 is HTML element
			menu = menu.nextSibling; // assign next sibling instead
		}
		setElementClass(TopicLink, state);
		setElementClass(menu, state);
		if (document.getElementById("searchType")) {
			if (state == "active") { 
				document.getElementById("searchType").style.visibility = "hidden";
			} else {
				document.getElementById("searchType").style.visibility = "visible";
			}
		}
	}
}

function setElementClass(element, classValue) {
	if (element.setAttribute("class", classValue)) {
		element.setAttribute("class", classValue);
	} else if (element.setAttribute("className", classValue)) {
		element.setAttribute("className", classValue);
	}
}


// ---------------------------------------------------------------------------------------
// scripts to get headline and blurb for share story features like digg and delicious
// ---------------------------------------------------------------------------------------


// ---------------------------------------------------------------------------------------
// preload images
// ---------------------------------------------------------------------------------------

MM_preloadImages('http://www.pbs.org/newshour/images/primary/header/btn_region.gif','http://www.pbs.org/newshour/images/primary/header/btn_region_down.gif','http://www.pbs.org/newshour/images/primary/header/btn_topic.gif','http://www.pbs.org/newshour/images/primary/header/btn_topic_down.gif','http://www.pbs.org/newshour/images/primary/header/btn_recentprograms_over.gif','http://www.pbs.org/newshour/images/primary/header/btn_localtvlistings_over.gif','http://www.pbs.org/newshour/images/primary/header/btn_subscriptions_over.gif','http://www.pbs.org/newshour/images/primary/header/btn_extra_over.gif');