function setActiveStyleSheet(title) 
{
	var i, a, main;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++)
	{
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) 
		{ 
			a.disabled = true;
			if(a.getAttribute("title") == title) a.disabled = false;
		}
	}
}

function getActiveStyleSheet() 
{
	var i, a;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) 
	{
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
	}
	return null;
}

function getPreferredStyleSheet()
{
	var i, a;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++)
	{
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("rel").indexOf("alt") == -1 && a.getAttribute("title"))
		return a.getAttribute("title");
	}
	return null;
}

// create a session cookie
function createCookie(name,value,days) 
{
	expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

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 PrintThisPage() 
{
	var sOption = "scrollbars,resizable"; 
	var sWinHTMLHeading = "<div id='pageutilities' ><a href='javascript:window.print()'><img src='/nia.nih.gov/Images/printer_icon.gif' alt='Send to printer' width='16' height='13' border='0'></a>&nbsp;<a href='javascript:window.print()'>Send to printer</a>&nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;<a href='javascript:window.close()'>Close</a></div>";
		sWinHTMLHeading += "<br><div id='hyperlinktoggle' >[<a href='javascript:hyperlinktoggle();'>Show Links</a>]</div>";
		sWinHTMLHeading += "<br>";
	var sWinHTMLBody = document.getElementById('PrintContent1').innerHTML;
		
	var winprint=window.open("","",sOption);
		winprint.document.open();
		winprint.document.write('<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html><link href="/nia.nih.gov/Style/nia.css" media="all" rel="stylesheet" type="text/css"><link href="/nia.nih.gov/Style/print.css" media="print" rel="stylesheet" type="text/css"><body>'); 
		winprint.document.write('<scr'+'ipt language="javascript" type="text/javascript">function hyperlinktoggle() { for(i=0; i<document.links.length; i++) { if (document.links[i].innerText != "") { if (document.links[i].href.substring(0,4)!="java" && document.links[i].innerHTML.substring(0,4)!="http") { document.links[i].innerHTML = document.links[i].innerHTML + " &lt;" + document.links[i].href + "&gt;"}}} document.getElementById("hyperlinktoggle").innerHTML = "[<a href=javascript:document.location.reload()>Hide Links</a>]"}</scr'+'ipt>');
		winprint.document.write(sWinHTMLHeading);
		winprint.document.write(sWinHTMLBody);
		winprint.document.write('</body></html>'); 
		winprint.document.close();
}
	
function emailpage() {
var strEmailTo = prompt("Recipient's email address:","");
	if (strEmailTo == null) {
		alert("You must enter an email address.")
	} else {
		var strBreak = "";
		var strEmailSubject = document.title;
		var strEmailLink = document.location.href;
		strEmailBody = "Please see the following Web document\n\n" + "Source:  The Alzheimer's Disease Education and Referral (ADEAR) Center\n\nTitle:      " + strEmailSubject + "\n\nLink:      " + strEmailLink + "\n";
		var docMessage = "mailto:" + strEmailTo + "?subject=" + escape(strEmailSubject) + "&body=" + escape(strEmailBody);
		window.location = docMessage;
		window.focus();
	}
}

function emailpageEzine() {
var strEmailTo = prompt("Recipient's email address:","");
	if (strEmailTo == null) {
		alert("You must enter an email address.")
	} else {
		var strBreak = "";
		var strEmailSubject = document.title;
		var strEmailLink = document.location.href;
		strEmailBody = "Please see the following Web document\n\n" + "Source:  Spotlight on Aging Research: News and Notes from the National Institute on Aging\n\nLink:      " + strEmailLink + "\n";
		var docMessage = "mailto:" + strEmailTo + "?subject=" + escape(strEmailSubject) + "&body=" + escape(strEmailBody);
		window.location = docMessage;
		window.focus();
	}
}

function PrintThisPageEzine() 
{
	var sOption = "scrollbars,resizable"; 
	var sWinHTMLHeading = "<div id='pageutilities' ><a href='javascript:window.print()'><img src='/nia.nih.gov/Images/printer_icon.gif' alt='Send to printer' width='16' height='13' border='0'></a>&nbsp;<a href='javascript:window.print()'>Send to printer</a>&nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;<a href='javascript:window.close()'>Close</a></div>";
		sWinHTMLHeading += "<br><div id='hyperlinktoggle' >[<a href='javascript:hyperlinktoggle();'>Show Links</a>]</div>";
		sWinHTMLHeading += "<br>";
	var sWinHTMLBody = document.getElementById('PrintContent1').innerHTML;
		
	var winprint=window.open("","",sOption);
		winprint.document.open();
		winprint.document.write('<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html><link href="/nia.nih.gov/Style/soar_print.css" media="screen" rel="stylesheet" type="text/css"><link href="/nia.nih.gov/Style/soar_print.css" media="print" rel="stylesheet" type="text/css"><body>'); 
		winprint.document.write('<scr'+'ipt language="javascript" type="text/javascript">function hyperlinktoggle() { for(i=0; i<document.links.length; i++) { if (document.links[i].innerText != "") { if (document.links[i].href.substring(0,4)!="java" && document.links[i].innerHTML.substring(0,4)!="http") { document.links[i].innerHTML = document.links[i].innerHTML + " &lt;" + document.links[i].href + "&gt;"}}} document.getElementById("hyperlinktoggle").innerHTML = "[<a href=javascript:document.location.reload()>Hide Links</a>]"}</scr'+'ipt>');
		winprint.document.write(sWinHTMLHeading);
		winprint.document.write(sWinHTMLBody);
		winprint.document.write('</body></html>'); 
		winprint.document.close();
}

function printCurrentPage() 
{ 
	var sOption="toolbar=yes,location=no,directories=yes,menubar=yes,scrollbars=yes"; 
	var sWinHTMLSendToPrinter = "<a href='javascript:window.print()'><img src='/nidcr.nih.gov/Images/icon_printable.gif' alt='Send to Printer' width='16' height='13' border='0'></a>&nbsp;";
		sWinHTMLSendToPrinter += "<font class=fontSmall><a href='javascript:window.print()'>Send To Printer</a></font>";
		sWinHTMLSendToPrinter += "&nbsp;|&nbsp;<font class=fontSmall><a href='javascript:window.close()'>Close</a></font><br>";	
	var sWinHTMLHeading = document.getElementById('ContentHeading').innerHTML;
	var sWinHTMLBody = document.getElementById('ContentBody').innerHTML; 	   
	var printCurrent = window.open("","",sOption); 
	
	printCurrent.document.write('<html><link href=/nidcr.nih.gov/Style/Style.css rel=stylesheet><body>'); 
	printCurrent.document.write(sWinHTMLSendToPrinter);
	printCurrent.document.write(sWinHTMLHeading);
	printCurrent.document.write(sWinHTMLBody);
	printCurrent.document.write('</body></html>'); 
	printCurrent.document.close();
}


window.onload = function(e) 
{
	var cookie = readCookie("TextSizeSelection");
	var title = cookie ? cookie : getPreferredStyleSheet();
	setActiveStyleSheet(title);	
}

window.onunload = function(e) 
{
	var title = getActiveStyleSheet();
	createCookie("TextSizeSelection", title, 30);
}

var cookie = readCookie("TextSizeSelection");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);