/* --------------------------------------------------------------------------------------------------------
AUTHOR:			Ryan Marincovich
DATE CREATED:	2008.10.13
File Purpose:	Blandin Foundation Common Javascript File
-------------------------------------------------------------------------------------------------------- */


// OVERLAY FUNCTIONS ----------------------------------------------
var isOverlayLoaded = false;

// build overlay objects (run onload)
function buildOverlay() {
	// global overlay elements
	mainOverlayObj = eval(doc + '"mainOverlay"' + sty);
	overlayBGObj = eval(doc + '"overlayBG"' + sty);
	//overlayF2FObj = eval(doc + '"overlayF2F"' + sty);
	overlayGalleryObj = eval(doc + '"photoGallery"' + sty);
	overlayVideoPlayerObj = eval(doc + '"videoPlayer"' + sty);
	overlayAudioPlayerObj = eval(doc + '"audioPlayer"' + sty);
	// build any site-specific elements
	buildOverlaySiteSpecific();
	// calc height
	overlayViewerWindowObj = document.getElementById('mainOverlay');
	overlayViewerBodyObj = document.getElementById('siteBodyContainer');
	windowHeight = overlayViewerWindowObj.offsetHeight;
	contentHeight = overlayViewerBodyObj.offsetHeight;
	overlayBGObj.height = Math.max(windowHeight, contentHeight) + "px";
	// set var to note objects are built and ready
	isOverlayLoaded = true;
}

// function to open f2f form overlay
function f2fOpen() {
	scroll(0, 0);
	mainOverlayObj.visibility = 'visible';
	overlayF2FObj.visibility = 'visible';
}
// function to close f2f form overlay
function f2fClose() {
	mainOverlayObj.visibility = 'hidden';
	overlayF2FObj.visibility = 'hidden';
}

// function to open all programs overlay
function programsOpen() {
	scroll(0, 0);
	mainOverlayObj.visibility = 'visible';
	overlayAllProgramsObj.visibility = 'visible';
}
// function to close all programs overlay
function programsClose() {
	mainOverlayObj.visibility = 'hidden';
	overlayAllProgramsObj.visibility = 'hidden';
}

// function to open photo gallery overlay
function openGalleryDetail(intResourceID, intFirstThumbID) {
	scroll(0, 0);
	mainOverlayObj.visibility = 'visible';
	overlayGalleryObj.visibility = 'visible';
	currGalleryImage = intFirstThumbID;
	var objGalleryContainer = document.getElementById("photoGallery");
	objGalleryContainer.innerHTML = '';
	ajaxOpenPhotoGallery(intResourceID);
}

// function to close photo gallery overlay
function photoGalleryClose(intNumThumbs) {
	mainOverlayObj.visibility = 'hidden';
	overlayGalleryObj.visibility = 'hidden';
	if (intNumThumbs > 0) {
		eval(doc + '"galleryMain' + currGalleryImage + '"' + sty + ".visibility = \'hidden\'");
		eval(doc + '"tinyThumbOn' + currGalleryImage + '"' + sty + ".visibility = \'hidden\'");
		eval(doc + '"descriptionMain' + currGalleryImage + '"' + sty + ".visibility = \'hidden\'");
	}
	currGalleryImage = null;
}

function ajaxOpenPhotoGallery(intResourceID) {
	var xmlHttp = GetXmlHttpObject();
	var objGalleryContainer = document.getElementById("photoGallery");
	xmlHttp.onreadystatechange=function() {
		if (xmlHttp.readyState==4) {
			objGalleryContainer.innerHTML = xmlHttp.responseText;
		}
	}
	var url = "/resources/gallery-detail.php?intResourceID="+intResourceID;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

var currGalleryImage = null;

function turnOnFirstImage(which) {
	if (currGalleryImage == null) {
		currGalleryImage = which;
	}
	eval(doc + '"galleryMain' + currGalleryImage + '"' + sty + ".visibility = \'visible\'");
	eval(doc + '"tinyThumbOn' + currGalleryImage + '"' + sty + ".visibility = \'visible\'");
	eval(doc + '"descriptionMain' + currGalleryImage + '"' + sty + ".visibility = \'visible\'");
}

function galleryNavOver(which) {
	if ((currGalleryImage != null) && (currGalleryImage != which)) {
		eval(doc + '"galleryMain' + currGalleryImage + '"' + sty + ".visibility = \'hidden\'");
		eval(doc + '"tinyThumbOn' + currGalleryImage + '"' + sty + ".visibility = \'hidden\'");
		eval(doc + '"descriptionMain' + currGalleryImage + '"' + sty + ".visibility = \'hidden\'");
	}
	currGalleryImage = which;
	eval(doc + '"galleryMain' + currGalleryImage + '"' + sty + ".visibility = \'visible\'");
	eval(doc + '"tinyThumbOn' + currGalleryImage + '"' + sty + ".visibility = \'visible\'");
	eval(doc + '"descriptionMain' + currGalleryImage + '"' + sty + ".visibility = \'visible\'");
	window.status = " ";
}

// function to open video overlay
function videoPlayerOpen() {
	scroll(0, 0);
	mainOverlayObj.visibility = 'visible';
	overlayVideoPlayerObj.visibility = 'visible';
}

// define function to start playing a video in a div obj without reloading the page
function openVideoDetail(strVideoTitle, strFlashSRC) {
	// open the overlay
	videoPlayerOpen();
	// get frame objects
	var objVideoFrame = document.getElementById('videoFrame');
	overlayVideoTitleObj = document.getElementById("videoTitle");
	overlayVideoTitleObj.innerHTML = strVideoTitle;
	// init html var and fill with content
	var strHTML = '';
	strHTML += '<div style="text-align:center; margin-bottom: 10px; display:none;">Playing: ' + strFlashSRC + '</div>';
	strHTML += '<script type="text/javascript">';
	strHTML += '	AC_FL_RunContent(\'writeToID\',\'videoFrame\',\'codebase\',\'http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0\',\'width\',\'400\',\'height\',\'345\',\'wmode\',\'transparent\',\'title\',\'Video\',\'src\',\'/_framework_shared/flash_video?strVideoFilename=/_uls/resources/' + strFlashSRC + '\',\'quality\',\'high\',\'pluginspage\',\'http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash\',\'movie\',\'/_framework_shared/flash_video?strVideoFilename=/_uls/resources/' + strFlashSRC + '\');';
	strHTML += '<\/script>';
	strHTML += '<noscript>';
	strHTML += '	<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0" width="400" height="345" title="Video">';
	strHTML += '		<param name="movie" value="/_framework_shared/flash_video.swf?strVideoFilename=/_uls/resources/' + strFlashSRC + '" />';
	strHTML += '		<param name="quality" value="high" />';
	strHTML += '		<param name="wmode" value="transparent" />';
	strHTML += '		<embed src="/_framework_shared/flash_video.swf?strVideoFilename=/_uls/resources/' + strFlashSRC + '" quality="high" wmode="transparent" pluginspage="http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash" type="application/x-shockwave-flash" width="400" height="345"></embed>';
	strHTML += '	</object>';
	strHTML += '</noscript>';
	// set video frame html
	objVideoFrame.innerHTML = strHTML;
	// eval all script that was set in html
	var x = objVideoFrame.getElementsByTagName("script");
	for (var i=0; i < x.length; i++) {
		eval(x[i].text);
	}
}

// function to stop a video (clears innerHTML of video frame)
function stopVideo() {
	mainOverlayObj.visibility = 'hidden';
	overlayVideoPlayerObj.visibility = 'hidden';
	var objVideoFrame = document.getElementById('videoFrame');
	objVideoFrame.innerHTML = '';
}

// function to open audio overlay
function audioPlayerOpen() {
	scroll(0, 0);
	mainOverlayObj.visibility = 'visible';
	overlayAudioPlayerObj.visibility = 'visible';
}

// function to play audio file through flash player controls
function openAudioDetail(strSongTitle, strFilename) {
	audioPlayerOpen();
	var objAudioFrame = document.getElementById('audioFrame');
	var overlayAudioTitleObj = document.getElementById('audioTitle');
	overlayAudioTitleObj.innerHTML = strSongTitle;
	// init html var and fill with content
	var strHTML = '';
	strHTML += '<div style="text-align:center; margin-bottom: 10px; display:none;">Playing: ' + strFilename + '</div>';
	strHTML += '<script type="text/javascript">';
	strHTML += '	AC_FL_RunContent(\'writeToID\',\'audioFrame\',\'codebase\',\'http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0\',\'width\',\'300\',\'height\',\'80\',\'wmode\',\'transparent\',\'title\',\'player_controls\',\'src\',\'/_framework_shared/audio?strAudioFilename=/_uls/resources/' + strFilename + '\',\'quality\',\'high\',\'pluginspage\',\'http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash\',\'movie\',\'/_framework_shared/audio?strAudioFilename=/_uls/resources/' + strFilename + '\');';
	strHTML += '<\/script>';
	strHTML += '<noscript>';
	strHTML += '	<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" width="300" height="80" title="Audio Player">';
	strHTML += '		<param name="movie" value="/_framework_shared/audio.swf?strAudioFilename=/_uls/resources/' + strFilename + '" />';
	strHTML += '		<param name="quality" value="high" />';
	strHTML += '		<param name="wmode" value="transparent" />';
	strHTML += '		<embed src="/_framework_shared/audio.swf?strAudioFilename=/_uls/resources/' + strFilename + '" quality="high" wmode="transparent" pluginspage="http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash" type="application/x-shockwave-flash" width="300" height="80"></embed>';
	strHTML += '	</object>';
	strHTML += '</noscript>';
	// set container html
	objAudioFrame.innerHTML = strHTML;
	// eval all script that was set in html
	var x = objAudioFrame.getElementsByTagName("script");
	for (var i=0; i < x.length; i++) {
		eval(x[i].text);
	}
}

// function to open audio player error message (for IE6)
function openAudioError(strSongTitle, strFilename) {
	audioPlayerOpen();
	var objAudioFrame = document.getElementById('audioFrame');
	var overlayAudioTitleObj = document.getElementById('audioTitle');
	overlayAudioTitleObj.innerHTML = strSongTitle;
	// init html var and fill with content
	var strHTML = '';
	strHTML += 'Sorry, streaming audio is not compatible with older versions of Internet Explorer (version 6 and earlier).<br /><br />';
	strHTML += 'If possible, we recommend upgrading your browser (try <a href="http://www.getfirefox.com" target="_blank">FireFox</a>).';
	// set container html
	objAudioFrame.innerHTML = strHTML;
}

// function to stop audio (clears innerHTML of audio frame)
function stopAudio() {
	mainOverlayObj.visibility = 'hidden';
	overlayAudioPlayerObj.visibility = 'hidden';
	var objAudioFrame = document.getElementById('audioFrame');
	objAudioFrame.innerHTML = '';
}

// END OVERLAY FUNCTIONS ------------------------------------------




// MAIN NAVIGATION FUNCTIONS/DATA ------------------------------------------

function navOn(which) {
	showNav(which);
	return true;
}
function navOff(which) {
	hideNav(which);
	return true;
}

// function to roll a nav button on
function navStayOn(which) {
	changeImages("nav_"+which,"nav_"+which+"_roll");
	return true;
}
// function to roll a nav button off
function navStayOff(which, state) {
	changeImages("nav_"+which,"nav_"+which+"_"+state);
	return true;
}

// function to roll a subnav panel on
function navSubOn(subwhich) {
	showSubNav(subwhich);
	return true;
}
// function to roll a subnav panel off
function navSubOff(subwhich) {
	hideSubNav(subwhich);
	return true;
}

var currRelatedBlock = null;

function toggleRelatedContent(which) {
	blockRelatedHeaderObj = eval("document.getElementById('related" + which + "')");
	blockRelatedLinksObj = eval("document.getElementById('related" + which + "Links').style");
	if (blockRelatedHeaderObj.className == 'related_header_on') {
		blockRelatedHeaderObj.className = 'related_header_off';
		blockRelatedLinksObj.display = 'none';
	} else {
		blockRelatedHeaderObj.className = 'related_header_on';
		blockRelatedLinksObj.display = 'block';
		if ((currRelatedBlock != null) && (currRelatedBlock != which)) {
			/*blockCurrentHeaderObj = eval("document.getElementById('related" + currRelatedBlock + "')");
			blockCurrentLinksObj = eval("document.getElementById('related" + currRelatedBlock + "Links').style");
			blockCurrentHeaderObj.className = 'related_header_off';
			blockCurrentLinksObj.display = 'none';*/
			currRelatedBlock = which;
		}
	}
	return true;
}

// END MAIN NAVIGATION FUNCTIONS/DATA ------------------------------------------




// UTILITY FUNCTIONS/DATA --------------------------------------------------

// sets cursor focus on the field given by param (formID.fieldID)
function formFocus(strFormAndFieldIDs) {
	if (isPageLoaded) {
		eval("document.forms." + strFormAndFieldIDs + ".focus();");
	} else {
		setTimeout("formFocus('" + strFormAndFieldIDs + "')", 100);
	}
}

// vars for dropdown menus
var navTimer = null;
var navSubTimer = null;
var currNav = null;
var currSubNav = null;
var navHideDelay = 500;
var isNavLoaded = false;
var isBCLoaded = false;

// build breadcrumb (run onload not on home page)
function buildBreadcrumb() {
	breadcrumbExpandObj = eval(doc + '"breadcrumbExpand"' + sty);
	breadcrumbCollapseObj = eval(doc + '"breadcrumbCollapse"' + sty);
	isBCLoaded = true;
}

var bcTimer = null;
var bcHideDelay = 500;

// breadcrumb functions
function breadcrumbOn() {
	if (isBCLoaded) {
		clearTimeout(bcTimer);
		bcTimer = null;
		eval("breadcrumbExpandObj.display = 'block'");
		eval("breadcrumbCollapseObj.display = 'none'");
	}
}
function breadcrumbOff() {
	if (isBCLoaded) {
		clearTimeout(bcTimer);
		bcTimer = null;
		bcTimer = setTimeout("breadcrumbExpandObj.display = 'none'", bcHideDelay);
		eval("breadcrumbCollapseObj.display = 'block'");
	}
}

// shows a sub dropdown menu, hides any other dropdown that is currently showing
function showSubNav(subwhich) {
	if (isNavLoaded) {
		clearTimeout(navSubTimer);
		navSubTimer = null;
		if ((currSubNav != null) && (currSubNav != subwhich)) {
			eval(currSubNav + "DropNavObj.visibility = 'hidden'");
			dropLinkObj = document.getElementById(subwhich + 'Link');
			dropLinkObj.className = 'panel_object_expand';
		}
		currSubNav = subwhich;
		eval(currSubNav + "DropNavObj.visibility = 'visible'");
		currDropLinkObj = document.getElementById(subwhich + 'Link');
		currDropLinkObj.className = 'panel_object_on';
	}
}
// hides a sub dropdown menu on a time delay
function hideSubNav(subwhich) {
	if (isNavLoaded) {
		clearTimeout(navSubTimer);
		navSubTimer = null;
		navSubTimer = setTimeout(subwhich + "DropNavObj.visibility = 'hidden'", navHideDelay);
		dropLinkObj = document.getElementById(subwhich + 'Link');
		dropLinkObj.className = 'panel_object_expand';
	}
}

// swap one or more images
function changeImages() {
	if (document.images) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			var argArray = arguments[i].split('.');
			var objName;
			if ((document.layers && argArray.length > 1) || argArray.length <= 1) {
				objName = eval("document." + arguments[i]);
			} else {
				objName = eval("document." + argArray[argArray.length - 1]);
			}
			objName.src = eval(changeImages.arguments[i+1] + ".src");
		}
	}
}

// dhtml layer variables for cross-browser compatability
if (document.layers) {	// Netscape 4
	doc = "document[";
	conDoc = "document";
	sty = "]";
	htm = ".document";
	cls = "].className";
} else if (document.getElementById) {	// NS 6 or IE 5 and up (W3C compliant browsers).
	doc = "document.getElementById(";
	conDoc = "document.getElementById(";
	sty = ").style";
	htm = ".document";
	cls = ").className";
} else if (document.all) {	// IE 4
	doc = "document.all[";
	conDoc = "document.all[";
	sty = "].style";
	htm = "";
	cls = "].className";
}