function getAbsoluteLeft(oNode)
{
	var oCurrentNode = oNode;
	var iLeft = 0;
	while (oCurrentNode.nodeName != "BODY")
	{
		iLeft += oCurrentNode.offsetLeft;
		oCurrentNode = oCurrentNode.offsetParent;
	}
	return iLeft;
}

function getAbsoluteTop(oNode)
{
	var oCurrentNode = oNode;
	var iTop = 0;
	while (oCurrentNode.nodeName != "BODY")
	{
		iTop += oCurrentNode.offsetTop;
		oCurrentNode = oCurrentNode.offsetParent;
	}
	return iTop;
}

function homepage(url)
{
	oHomePage.style.behavior = 'url(#default#homepage)';
	oHomePage.setHomePage(url);
	ishomepage=oHomePage.isHomePage(url);
	if (ishomepage == true)
	{
		var homepagelink = document.getElementById("homepagehref");
		homepagelink.parentNode.removeChild(homepagelink);
	}
}

function SetKeyboardInputFocus()
{
	try
	{
		if (100 > document.body.scrollTop)
		{
			var objSrchFrm = document.dictSearchFrm;
			if (objSrchFrm != null) objSrchFrm.search_dict.focus();
			else
			{
				objSrchFrm = document.filtSrch;
				if (objSrchFrm != null) 
				    objSrchFrm.filtSrchText.focus();
			}
		}
	}
	catch(err) {}
}

function DisplaySideCar()
{
	if (document.getElementById('sidecar_empty') == null)
	{
		var sidecarCell = document.getElementById("SideCarCell");
		if (sidecarCell)
		{
		    var widthLimit = 1054;
		    if (document.getElementById('silverlightSearchObject') != null)
		        widthLimit = 1370;
		
			if (document.body.clientWidth > widthLimit)
				sidecarCell.style.display = 'block';
			else
				sidecarCell.style.display = 'none';
			
			if (document.body.clientWidth >= 1266)
				document.getElementById('GrandContainerTable').style.width = 1266;
			else	
				document.getElementById('GrandContainerTable').style.width = '100%';
		}
	}
}

function setFrameHeight(id, endObjId)
{
	try
	{
		var frameDoc = (navigator.userAgent.indexOf("MSIE")>0)?document.frames(id).document:document.getElementById(id).contentDocument;
		var objEnd = frameDoc.getElementById(endObjId);
		if (objEnd == null)
			document.getElementById(id).style.height = 0;
		else if (objEnd.offsetTop > 0)
			document.getElementById(id).style.height = objEnd.offsetTop;
	}
	catch(err) {}
}

function UTF8UrlEncode(input)
{
	var output = "";
	var currentChar = '';
	
	for (var counter = 0; counter < input.length; counter++) 
	{
		currentChar = input.charCodeAt(counter);
		
		if ((48 <= currentChar) && (currentChar <= 57))
			output = output + input.charAt(counter);
		else if ((65 <= currentChar) && (currentChar <= 90))
			output = output + input.charAt(counter);
		else if ((97 <= currentChar) && (currentChar <= 122))
			output = output + input.charAt(counter);
		else
			output = output + UTF8UrlEncodeChar(currentChar); 
	}
	return output;
}

function UTF8UrlEncodeChar(input)
{
	if (input <= 0x7F) 
	    return "%" + input.toString(16);

	var leadByte = 0xFF80; 
	var hexString = ""; 
	var leadByteSpace = 5;
	
	while (input > (Math.pow(2, leadByteSpace + 1) - 1))
	{
		hexString = "%" + ((input & 0x3F) | 0x80).toString(16) + hexString;
		leadByte = (leadByte >> 1);
		leadByteSpace--;
		input = input >> 6;
	} 
	return ("%" + (input | (leadByte & 0xFF)).toString(16) + hexString).toUpperCase();
}

function DisplayPrintWarning(PageCount,PageLimit,URL)
{
	var strWarning = "";
	if (PageCount >PageLimit)
	{
		LowerLimit = PageCount - 3;
		UpperLimit = PageCount + 3;
		var RegExpLo = /\{0\}/gi;
		var RegExpUp = /\{1\}/gi;
		strWarning = print_warning_text.replace(RegExpLo,LowerLimit);
		strWarning = strWarning.replace(RegExpUp,UpperLimit);
		alert(strWarning);
	}
	window.open(URL,'_self');
}

function validateFbk(list, radio, frm)
{	
	if (radio[0].checked)
	{
		alert(errmsg1);
		return false;
	}
	if (list.selectedIndex <= 0)
	{
		alert(errmsg2);
		return false;
	}
	frm.action=fdbkURL;
	return true;
}

function KidsModSel(mod, clsname, fdesc)
{
	mod.className = clsname;
	if (fdesc == 1) 
	    mod.getElementsByTagName("div")[1].style.textDecoration = "underline";
}

function KidsModUnsel(mod, clsname, fdesc)
{
	mod.className = clsname;
	if (fdesc == 1) 
	    mod.getElementsByTagName("div")[1].style.textDecoration = "none";
}

function blogThis(serviceUrl)
{
	// Add a trailing / to the end of the URL (if needed).
	if (serviceUrl.charAt(serviceUrl.length - 1) != "/")
		serviceUrl += "/";
	
	// Get the URL of the window calling this function.
	var blogUrl = window.location.href;
	
	// Remove anchor
	var ihsh = blogUrl.lastIndexOf("#");
	if (ihsh != -1)
		blogUrl = blogUrl.substring(0, ihsh);
	
	// For articles, remove page number (and any other params)
	var ienc = blogUrl.indexOf("/encyclopedia_");
	if (ienc != -1)
	{
		var iund = blogUrl.indexOf("_", ienc+14);
		var isla = blogUrl.indexOf("/", ienc+14);
		if (iund != -1 && iund < isla)
			blogUrl = blogUrl.substring(0, iund) + blogUrl.substring(isla, blogUrl.length);
	}

    // Max Url length for Internet Explorer.
    var maxUrlLength = 2083;
    var openUrl = serviceUrl + "BlogIt.aspx?Title=" + escape(document.title) + "&SourceURL=" + escape(blogUrl) + "&description=";
    var sel = "";

    // Deal with the selection of text in the articles.

    // Mozilla browsers.
    if (window.getSelection)
        openUrl += window.getSelection().toString();    
    // IE browsers.
    else if (document.selection.type.toLowerCase() == "text")
    {
        range = document.selection.createRange();
        range.expand("word");
        sel = escape(range.htmlText);

        if ((openUrl.length + sel.length) <= maxUrlLength)
            openUrl += sel;
    }

	window.open(openUrl, "blog_popup");
}

function URLencode(sStr)
{
    newStr = escape(encodeURI(decodeURI(sStr)));
    return newStr;     
}
  
function emailThisLink(subject_prefix, title, bodyprefix, bodysuffix)
{
    var url, subject, body;
    url = window.location.href;

    subject = escape(subject_prefix) + escape(title);
    if (bodysuffix != '')
        body = escape(bodyprefix) + "%0A" + "%0A" + escape(title) + "%0A" + "%0A" + URLencode(url) + "%0A" + escape(bodysuffix);
    else
        body = escape(bodyprefix) + "%0A" + "%0A" + escape(title) + "%0A" + "%0A" + URLencode(url);
   
    document.location = 'mailto:?subject=' + subject + '&body=' + body;
}

function emailQuizChallenge(subject, title, body)
{
    var email_uri, email_subject, email_body;

    email_uri = removeQueryStringValue(window.location.href, "GT1");
    email_uri = removeQueryStringValue(email_uri, "qpt");
    email_subject = escape(subject);
    email_body = escape(body) + "%0A" + "%0A" + escape(title) + "%0A" + "%0A" + URLencode(email_uri);

    document.location = 'mailto:?subject=' + email_subject + '&body=' + email_body;
}

function removeQueryStringValue(url, value)
{
	var start = url.toUpperCase().indexOf("&" + value.toUpperCase() + "=");
	if (start > 0)
	{
		var end = url.indexOf("&", start+1);
		if (end >= 0)
			return url.substring(0, start) + url.substring(end);
		else
			return url.substring(0, start);
	}
	return url;
}