// ############################################################################
// ##
// ##  CUSTOM WEBSITE FUNCTIONS
// ##  (i.e. not standard white site functions)
// ##
// ############################################################################

// Put custom functions for your website here.


// ====================
// Function:    ShowLoginAlert
//
// Purpose:     Specific function for NTAA login alert
//
// Input:       objRef - ID of object
//              blnAction - 'visible' OR 'hidden'
//
// Output:      None.
//
// Assumptions: -
//
// History:     20061026 - SC Created
// ====================
function ShowLoginAlert() {

	var strPageContentHeight = GetObjectHeight('page-content');
	
	document.getElementById('cart-page-alert').style.top = eval(strPageContentHeight - 3) + "px";;
	
	LayerVisibility('cart-page-alert','visible');
	
}

// ====================
// Function:    LayerVisibilityDelay
//
// Purpose:     Sets a given delay on changing visibility of a DIV.
//
// Input:       objRef - ID of object
//              blnAction - 'visible' OR 'hidden'
//		intDelay - Delay time in milliseconds
//
// Output:      None.
//
// Assumptions: -
//
// History:     20061026 - SC Created
// ====================
var intTimer;

function LayerVisibilityDelay(objRef,blnAction,intDelay) {
	
	clearTimeout(intTimer);
	
	intTimer = setTimeout("LayerVisibility('"+objRef+"','"+blnAction+"')",intDelay);
	
}

// ====================
// Function:    ConfirmMessage
//
// Purpose:     Open a confirmation box before continuing.
//
// Input:       strURL - The URL of the page to open
//              strMessage - The message to put in the confirmation box.
//
// Output:      Continues to the URL if ok is selected.
//
// Assumptions: -
//
// History:     20060705 - SW Created
// ====================
function ConfirmMessage(strURL,strMessage)
{
	confirmed = window.confirm(strMessage);
	if (confirmed)
	{	
		window.location.href = strURL;
	} 
	else 
	{
		return false;
	}
}

// ====================
// Function:    addToFavorites
//
// Purpose:     Bookmarks a given URL.
//
// Input:       strURL - The URL of the page to bookmark
//              strMessage - The message to put in the link.
//
// Output:      Bookmarks the current page according to browser bookmarking process.
//
// Assumptions: -
//
// History:     20060711 - SW Not completed.
// ====================
function addToFavorites()
{	
	if (window.external)
	{
		window.external.AddFavorite(location,document.title)
	}
	else
	{ 
		alert("Sorry! Your browser doesn't support this function. Try pressing Ctrl + D,\nor selecting 'Bookmark this page...' from your Bookmarks menu.");
	}
}

// ====================
// Function:    GetObjectWidth
//
// Purpose:     Returns the width of any passed in block level object
//
// Input:       ID of item
//
// Output:      Returns the width of any passed in block level object
//
// Assumptions: -
//
// History:     SC 2006-05-15
// ====================
function GetObjectWidth(objectRef)
{
	var intWidth = -1;

	if (document.getElementById)
	{
		if (document.getElementById(objectRef))
		{
			intWidth = eval(document.getElementById(objectRef).offsetWidth);
		}
	}
	else if (document.all)
	{
		if (document.all[objectRef])
		{
			intWidth = document.all[objectRef].scrollWidth;
		}
	}
	else if (document.layers)
	{
		if (document[objectRef])
		{
			intWidth = document[objectRef].clip.bottom;
		}
	}

	return intWidth;
}

// ====================
// Function:    GetObjectHeight
//
// Purpose:     Returns the height of any passed in block level object
//
// Input:       ID of item
//
// Output:      Returns the height of any passed in block level object
//
// Assumptions: -
//
// History:     SC 2006-05-15
// ====================
function GetObjectHeight(objectRef)
{
	var intHeight = -1;

	if (document.getElementById)
	{
		if (document.getElementById(objectRef))
		{
			intHeight = eval(document.getElementById(objectRef).offsetHeight);
		}
	}
	else if (document.all)
	{
		if (document.all[objectRef])
		{
			intHeight = document.all[objectRef].scrollHeight;
		}
	}
	else if (document.layers)
	{
		if (document[objectRef])
		{
			intHeight = document[objectRef].clip.bottom;
		}
	}

	return intHeight;
}

// ====================
// Function:    SetUniformHeight
//
// Purpose:     Sets a number of page objects to a uniform height, being the
//              maximum height of any of the given objects.
//
// Input:       strPageObjects - Comma separated list of object IDs that should
//              be set to a uniform height.
//
// Output:      Updates the height of the given objects.
//
// Assumptions: GetObjectHeight()
//
// History:     20060823 RW Created
// ====================
function SetUniformHeight(strPageObjects)
{
	intMaxHeight = 0;

	if (strPageObjects)
	{
		arrPageObjects = strPageObjects.split(",");
	}

	if (arrPageObjects)
	{
		// Find the height of the tallest object.
		for (i = 0; i < arrPageObjects.length; i++)
		{
			intThisHeight = GetObjectHeight(arrPageObjects[i]);
			if (intThisHeight > intMaxHeight)
			{
				intMaxHeight = intThisHeight;
			}
		}

		// Set all the objects to the same (maximum) height if a height larger
		// than 0 was found.
		if (intMaxHeight > 0 )
		{
			for (i = 0; i < arrPageObjects.length; i++)
			{
				if (blnIE) 
				{
					strMaxHeight = intMaxHeight;
				}
				else
				{
					strMaxHeight = intMaxHeight + 'px';
				}
				if(document.getElementById(arrPageObjects[i]))
				{
					document.getElementById(arrPageObjects[i]).style.height = strMaxHeight;
				}
			}
		}
	}
}

// ====================
// Function:    GetCSSProperty
//
// Purpose:     Allows retrieval of a CSS property from a separately specified style sheet.
//
// Input:       objElement - The element for which you want to retrive a CSS property
//              strCSSProperty - The JS/CSS style name, e.g. fontSize
//              strCSSPropertyLabel - The style label as though you wrote it in a stylesheet, e.g. font-size
//
// Output:      Returns the CSS property value. Note: Raw value in IE, computed value in NS!
//
// Assumptions: -
//
// History:     20080514 RW Created
// ====================
function GetCSSProperty(objElement, strCSSProperty, strCSSPropertyNS) {
    if (objElement.currentStyle) { //if IE5+
        return objElement.currentStyle[strCSSProperty];
    } else if (window.getComputedStyle) { //if NS6+
        var objElementStyle = window.getComputedStyle(objElement, "");
        return objElementStyle.getPropertyValue(strCSSPropertyNS);
    }
}

// ####################################
// ##
// ##  Accessibility
// ##
// ####################################

// ====================
// Function:    TextSize
//
// Purpose:     Allows the user to alter the text size in the site style sheet.
//
// Input:       '-' to decrease the text size.
//              '+' to increase the text size.
//
// Output:      Alters the base text size on the <body> tag.
//
// Assumptions: -
//
// History:     20080515 RW Created
// ====================
function TextSize(strIncrement) {
   
    //intTextSize = document.getElementsByTagName("body")[0].style.fontSize;
    //intTextSize = document.body.style.fontSize;
    strTextSize = GetCSSProperty(document.body,"fontSize","font-size");
    
    if (strTextSize.indexOf("em") > 0) {
        strTextSizeUnit = "em";
        intTextSize = strTextSize.substring(0,strTextSize.length-2);
    } else if (strTextSize.indexOf("px") > 0) {
        strTextSizeUnit = "px";
        intTextSize = strTextSize.substring(0,strTextSize.length-2);
    } else if (strTextSize.indexOf("%") > 0) {
        strTextSizeUnit = "%";
        intTextSize = strTextSize.substring(0,strTextSize.length-1);
    } else {
        strTextSizeUnit = "%";
        intTextSize = "100";
    }

    if (strIncrement == '-') {
        intTextSize = intTextSize / 1.2;
    } else if (strIncrement == '+') {
        intTextSize = intTextSize * 1.2;
    }
    
    document.body.style.fontSize = intTextSize + strTextSizeUnit;
}


// ############################################################################
// ##
// ##  STANDARD WHITE SITE FUNCTIONS
// ##
// ############################################################################

// ####################################
// Navigation
// ####################################

// ====================
// Function:    NavPullDown
//
// Purpose:     Go to a URL that is selected from a form a pull-down form field
//
// Input:       strFormName - The ID of the form being used to select naviation
//              strFieldName - The ID of the field with URL select options
//
// Output:      Navigates to selected URL.
//
// Assumptions: -
//
// History:     DDSN created back in the Distant Past
// ====================
function NavFormSelect(strFormName,strFieldName)
{
	intSelected = document[strFormName].elements[strFieldName].options.selectedIndex;
	strURL = document[strFormName].elements[strFieldName].options[intSelected].value;
	document[strFormName].elements[strFieldName].options.selectedIndex = 0;
	if (strURL != "")
	{
		location.href = strURL;
	}
}

// ####################################
// Windows & Alerts
// ####################################

// ====================
// Function:    Popup
//
// Purpose:     Open a popup window with a series of option settings.
//
// Input:       strPage - The URL of the page to open in the popup window.
//              intWidth - The window width in pixels 
//              intHeight - The window height in pixels
//              strID - The ID of the popup window. (This is important if the
//                window may be called on by other functions or if there are
//                multiple popup windows in a site.)
//              strScrollbars - Switch visible scrollbars on/off ("yes"/"no")
//              strLocation - Switch visible location bar on/off ("yes"/"no")
//              strToolbar - Switch visible toolbar on/off ("yes"/"no")
//              strStatus - Switch visible status bar on/off ("yes"/"no")
//              strResizable - Window is resizable or not ("yes"/"no")
//
// Output:      Window opens containing the specified URL.
//
// Assumptions: -
//
// History:     DDSN created back in the Distant Past
// ====================
function Popup(strPage,intWidth,intHeight,strID,strScrollbars,strLocation,strToolbar,strStatus,strResizable)
{
	if (!strPage)
	{
		strPage = "/";
	}
	if (!intWidth)
	{
		intWidth = 660;
	}
	if (!intHeight)
	{
		intHeight = 320;
	}
	if (!strID)
	{
		strID = "PopupWindow";
	}
	if (!strScrollbars)
	{
		strScrollbars = "yes";
	}
	if (!strLocation)
	{
		strLocation = "no";
	}
	if (!strToolbar)
	{
		strToolbar = "no";
	}
	if (!strStatus)
	{
		strStatus = "no";
	}
	if (!strResizable)
	{
		strResizable = "yes";
	}
	//if (isLoaded == 0)
	//{
	//	location.reload();
	//}
	idPopup = window.open(strPage,strID,"width="+intWidth+",height="+intHeight+",scrollbars="+strScrollbars+",location="+strLocation+",toolbar="+strToolbar+",status="+strStatus+",resizable="+strResizable);
	if (window.focus)
	{
		idPopup.focus();
	}
	return false;
}

// ====================
// Function:    Popdown
//
// Purpose:     Open a link in a popup window in a specified main window and
//              close the popup window. If the specified link window does not
//              exist it is created. If no window is specified the link is
//              targeted to the original opener of the popup window.
//
// Input:       strURL - The URL of the page to open
//              strWindowID - The ID of the window in which to open the link
//
// Output:      Navigates to selected URL in selected window and closes current
//              window.
//
// Assumptions: -
//
// History:     DDSN created back in the Distant Past
//              2004 Multiple window targets added. (Previously could only
//                   target the opener.)
// ====================
function Popdown(strURL,strWindowID)
{
	if (!strWindowID)
{
		top.opener.location.href = strURL;
}
	else
{
	if (strWindowID.location)
	{
			strWindowID.location.href = strURL;
	}
	else
	{
			window.open(strURL,strWindowID);
	}
}
	top.close();
}

// ====================
// Function:    RequireKeywords
//
// Purpose:     Checks any search form to make sure keywords are entered before
//              the form can be submitted. 
//
// Input:       strFormName - The ID of the form with the keywords field in it
//              strFieldName - The ID of the keywords field within the form 
//
// Output:      Give an error if no keywords are presented.
//
// Assumptions: -
//
// History:     20040109 RW Created to replace local code in site templates.
// ====================
function RequireKeywords(strFormID,strFieldName)
{
	if (document.forms[strFormID].elements[strFieldName].value.length < 3)
	{
		alert("Please alter your requested keyword(s) in the search form.\nThe search phrase must be 3 characters or more in length.")
		return false;
	}
}

// ====================
// Function:    CS
//
// Purpose:     Display a "coming soon" message for sections of a website that
//              have not been created yet. This function is sometimes used in
//              development to make links active before a site is finished.
//
//              Note: This is an evil funciton, it should not be used! It
//              encourages bad development habits.
//
// Input:       -
//
// Output:      Show a "coming soon" message.
//
// Assumptions: -
//
// History:     DDSN created back in the Distant Past
// ====================
function CS()
{
	alert("That function is coming soon.");
}

// ####################################
// Image Manipulation
// ####################################

// ====================
// Function:    ImageSwap
//
// Purpose:     Swap any image to another.
//
// Input:       strImageID - ID of the image being swapped
//              strNewImageSrc - Source of the new image being loaded
//
// Output:      Swaps images.
//
// Assumptions: Images with all specified IDs exist and are pre-loaded.
//
// History:     DDSN created back in the Distant Past
// ====================
function ImageSwap(strImageID,strNewImageSrc)
{
	if (document.images)
	{
		document.images[strImageID].src = eval(strNewImageSrc+".src");
	}
}

// ====================
// Function:    ImageSwapFX
//
// Purpose:     Swap any image to another using an optional fade effect. Can
//              also be called with the transition effect disabled, i.e. just
//              swap the images.
//
// Input:       strImageID - ID of the image being swapped
//              strNewImageSrc - Source of the new image being loaded
//              blnDisableTrans - Switch the transition off or on (1/0)
//
// Output:      Swaps images with optional fade effect.
//
// Assumptions: - Images with all specified IDs exist and are pre-loaded.
//              - Requires fading transition style to be set first on image tag
//              - Only works for IE5.5+ but falls back nicely
//              - Javascript Globals: blnToggleTrans
//
// History:     2003 DDSN Created
//              2004 Updated with more standard naming structures
// ====================
function ImageSwapFX(strImageID,strNewImageSrc,blnDisableTrans)
{
	if (blnDisableTrans || !document.images[strImageID].filters || blnIE50)
	{
		if (document.images)
		{
			document.images[strImageID].src = eval(strNewImageSrc+".src");
		}
	}
	else
	{
		// After setting Apply, changes to the object are not displayed
		// until Play is called.
		document.images[strImageID].filters[0].Apply();

		if (blnToggleTrans)
		{
			blnToggleTrans = 0;
			document.images[strImageID].src = eval(strNewImageSrc+".src");
		}
		else
		{
			blnToggleTrans = 1;
			document.images[strImageID].src = eval(strNewImageSrc+".src");
		}
		document.images[strImageID].filters[0].Play();
	}
}

// ####################################
// Layer Manipulation
// ####################################

// ====================
// Function:    LayerVisibility
//
// Purpose:     Turn visibility of any layer on or off.
//
// Input:       strLayerID - ID of the layer being altered
//              strState = "visible" or "hidden"
//
// Output:      Turns specified layer on or off.
//
// Assumptions: Specified layer exists in document hierarchy.
//
// History:     DDSN created back in the Distant Past
// ====================
function LayerVisibility(strLayerID,strState)
{
	
	clearTimeout(intTimer);
	
	if (blnNS4)
	{
		if (document.layers[strLayerID])
		{
			document.layers[strLayerID].visibility = strState;
		}
	}
	else if (blnDOM)
	{
		if (document.getElementById(strLayerID))
		{
			document.getElementById(strLayerID).style.visibility = strState;
		}
	}
	else if (blnIE)
	{
		if (document.all[strLayerID])
		{
			document.all[strLayerID].style.visibility = strState;
		}
	}
}

// ====================
// Function:    LayerDisplay
//
// Purpose:     Turn display of any layer on or off.
//
// Input:       strLayerID - ID of the layer being altered
//              strState = "visible" or "hidden"
//
// Output:      Turns specified layer on or off.
//
// Assumptions: Specified layer exists in document hierarchy.
//
// History:     DDSN created back in the Distant Past
// ====================
function LayerDisplay(strLayerID,strState)
{
	if (blnNS4)
	{
		if (document.layers[strLayerID])
		{
			document.layers[strLayerID].display = strState;
		}
	}
	else if (blnDOM)
	{
		if (document.getElementById(strLayerID))
		{
			document.getElementById(strLayerID).style.display = strState;
		}
	}
	else if (blnIE)
	{
		if (document.all[strLayerID])
		{
			document.all[strLayerID].style.display = strState;
		}
	}
}


// ####################################
// Printing
// ####################################

// ====================
// Function:    LoadVBPrinter
//
// Purpose:     Load Visual Basic printing commands for VB enabled browsers.
//
// Input:       -
//
// Output:      Loads (writes out) visual basic printing functions.
//
// Assumptions: Javascript Globals: blnIE, blnCanPrint, blnMac
//
// History:     DDSN created back in the Distant Past
// ====================
//function LoadVBPrinter()
//{
	if (blnIE && !blnCanPrint && !blnMac) with (document)
	{
		writeln('<OBJECT ID="WB" WIDTH="0" HEIGHT="0" CLASSID="clsid:8856F961-340A-11D0-A96B-00C04FD705A2"></OBJECT>');
		writeln('<' + 'SCRIPT LANGUAGE="VBScript">');
		writeln('Sub window_onunload');
		writeln('    On Error Resume Next');
		writeln('    Set WB = nothing');
		writeln('End Sub');
		writeln('Sub vbPrintPage');
		writeln('    OLECMDID_PRINT = 6');
		writeln('    OLECMDEXECOPT_DONTPROMPTUSER = 2');
		writeln('    OLECMDEXECOPT_PROMPTUSER = 1');
		writeln('    On Error Resume Next');
		writeln('    WB.ExecWB OLECMDID_PRINT, OLECMDEXECOPT_DONTPROMPTUSER');
		writeln('End Sub');
		writeln('<' + '/SCRIPT>');
	}
//}

// ====================
// Function:    PrintPage
//
// Purpose:     Opens the print dialog window or shows a fallback message for
//              unsupported browsers
//
// Input:       -
//
// Output:      Opens the print dialog window or shows a fallback message for
//              unsupported browsers.
//
// Assumptions: Javascript Globals: blnCanPrint, blnIE, blnMac
//
// History:     DDSN created back in the Distant Past
// ====================
function PrintPage()
{
	if (blnCanPrint)
	{
		window.print();
	}
	else if (blnIE && !blnMac)
	{
		vbPrintPage();
	}
	else
	{
		alert("Your web browser does not appear to support the automatic\nPrint function. To print this page, please select the \"Print\"\noption from the \"File\" menu of your web browser.");
	}
}

// ##################
// HTML Manipulation
// ##################

// Take a HTML string and lay it out nicely. This is not intended to be an
// advanced function, but it does make unreadable HTML code created by
// various HTML editors much easier to use.
function MakePrettyHTML(objHTML)
	{

	//allHTML = tbContentElement.DOM.body.innerHTML;
	allHTML = objHTML;

	allHTML = allHTML.replace(/<img/gi,"||<img");
	allHTML = allHTML.replace(/<br>/gi,"||<br>");
	allHTML = allHTML.replace(/<\/a>/gi,"||</a>");
	allHTML = allHTML.replace(/<em>/gi,"||<em>");
	allHTML = allHTML.replace(/<strong>/gi,"||<strong>");
	allHTML = allHTML.replace(/<b>/gi,"||<b>");
	allHTML = allHTML.replace(/<i>/gi,"||<i>");
	allHTML = allHTML.replace(/<\/td>/gi,"||</td>");
	allHTML = allHTML.replace(/<\/li>/gi,"||</li>");

	allHTML = allHTML.replace(/></gi,">\n<");

	allHTML = allHTML.replace(/\|\|<img/gi,"<img");
	allHTML = allHTML.replace(/\|\|<br>/gi,"<br>");
	allHTML = allHTML.replace(/\|\|<\/a>/gi,"</a>");
	allHTML = allHTML.replace(/\|\|<em>/gi,"<em>");
	allHTML = allHTML.replace(/\|\|<strong>/gi,"<strong>");
	allHTML = allHTML.replace(/\|\|<b>/gi,"<b>");
	allHTML = allHTML.replace(/\|\|<i>/gi,"<i>");
	allHTML = allHTML.replace(/\|\|<\/td>/gi,"</td>");
	allHTML = allHTML.replace(/\|\|<\/li>/gi,"</li>");

	allHTML = allHTML.replace(/<p/gi,"<p");
	allHTML = allHTML.replace(/<\/p>/gi,"</p>");
	allHTML = allHTML.replace(/ <\/p>/gi,"</p>");
	allHTML = allHTML.replace(/<h1/gi,"<h1");
	allHTML = allHTML.replace(/<h2/gi,"<h2");
	allHTML = allHTML.replace(/<h3/gi,"<h3");
	allHTML = allHTML.replace(/<h4/gi,"<h4");
	allHTML = allHTML.replace(/<h5/gi,"<h5");
	allHTML = allHTML.replace(/<h6/gi,"<h6");
	allHTML = allHTML.replace(/<ul/gi,"<ul");
	allHTML = allHTML.replace(/<ol/gi,"<ol");
	allHTML = allHTML.replace(/<blockquote/gi,"<blockquote");
	allHTML = allHTML.replace(/<img/gi,"<img");
	allHTML = allHTML.replace(/<font/gi,"<font");
	allHTML = allHTML.replace(/<\/font>/gi,"</font>");
	allHTML = allHTML.replace(/<a /gi,"<a ");
	allHTML = allHTML.replace(/<strong/gi,"<b");
	allHTML = allHTML.replace(/<\/strong>/gi,"</b>");
	allHTML = allHTML.replace(/<b/gi,"<b");
	allHTML = allHTML.replace(/<\/b>/gi,"</b>");
	allHTML = allHTML.replace(/<i/gi,"<i");
	allHTML = allHTML.replace(/<\/i>/gi,"</i>");
	allHTML = allHTML.replace(/<em/gi,"<em");
	allHTML = allHTML.replace(/<\/em>/gi,"</em>");
	allHTML = allHTML.replace(/<br>/gi,"<br>\n");
	allHTML = allHTML.replace(/<\/h1>/gi,"</h1>\n");
	allHTML = allHTML.replace(/<\/h2>/gi,"</h2>\n");
	allHTML = allHTML.replace(/<\/h3>/gi,"</h3>\n");
	allHTML = allHTML.replace(/<\/h4>/gi,"</h4>\n");
	allHTML = allHTML.replace(/<\/h5>/gi,"</h5>\n");
	allHTML = allHTML.replace(/<\/h6>/gi,"</h6>\n");
	allHTML = allHTML.replace(/<\/p>/gi,"</p>\n");
	allHTML = allHTML.replace(/<table(.*)>/gi,"<table$1>");
	allHTML = allHTML.replace(/<tbody/gi,"  <tbody");
	allHTML = allHTML.replace(/<tr/gi,"  <tr");
	allHTML = allHTML.replace(/<td/gi,"    <td");
	allHTML = allHTML.replace(/<\/tr>/gi,"  </tr>");
	allHTML = allHTML.replace(/<\/table>/gi,"</table>");
	allHTML = allHTML.replace(/<\/tbody>/gi,"  </tbody>");
	allHTML = allHTML.replace(/<li>/gi,"  <li> ");
	allHTML = allHTML.replace(/<\/li>/gi,"</li>\n");
	allHTML = allHTML.replace(/<\/ul>/gi,"</ul>\n");
	allHTML = allHTML.replace(/<\/ol>/gi,"</ol>\n");
	allHTML = allHTML.replace(/<\/blockquote>/gi,"</blockquote>\n");

	//allHTML = allHTML.replace(/<p><table/gi,"<table");
	//allHTML = allHTML.replace(/<\/table><\/p>/gi,"</table>\n");

	if (blnMozHTMLEditor)
		{
		// What a hack! There is a better way to do this...
		allHTML = allHTML.replace(/\n\n/gi,"\n");
		allHTML = allHTML.replace(/\n\n/gi,"\n");
		allHTML = allHTML.replace(/  /gi," ");
		}

	return allHTML;
	}

// Load Visual Basic printing commands for VB enabled browsers
//LoadVBPrinter()

// ####################################
// Fun Stuff / Easter Eggs
// ####################################

// No easter eggs currently present. :-)

