function closeLoginArea() {
	document.getElementById('logInClosed').style.display = 'block';
	document.getElementById('logInOpen').style.display = 'none';
}
function openLoginArea() {
	document.getElementById('logInClosed').style.display = 'none';
	document.getElementById('logInOpen').style.display = 'block';
	document.forms['loginForm'].elements['user_id'].focus();
}

galleryObjects = new Array(); // in case we ever have more than gallery on one page
function buildGallery(galleryObject) {

	galleryObjectIndex = galleryObjects.length;
	galleryObjects[galleryObjectIndex] = galleryObject;
	
	var galleryDiv = document.getElementById(galleryObject.galleryID);
	if (galleryObject.galleryArray.length > 0) {
		tempHtml = '<div id="galleryImages">';
//		tempHtml += '	<div class="galleryImage_prev"><img id="galleryImage_prev" src="' + galleryObject.levelString + 'images/nada.gif" width="584" height="282" /></div>';
		tempHtml += '	<div class="galleryImage"><img id="galleryImage" src="' + galleryObject.levelString + galleryObject.galleryArray[0][2] + '" width="584" height="282" /></div>';
		if (galleryObject.galleryArray.length > 1) {
			tempHtml += '	<div class="galleryImage_2"><img id="galleryImage_2" src="' + galleryObject.levelString + galleryObject.galleryArray[1][2] + '" width="584" height="282" /></div>';
		} else {
			tempHtml += '	<div class="galleryImage_2"><img id="galleryImage_2" src="' + galleryObject.levelString + galleryObject.galleryArray[0][2] + '" width="584" height="282" /></div>';	
		}
//		tempHtml += '	<div class="galleryImage_next"><img id="galleryImage_next" src="' + galleryObject.levelString + 'images/nada.gif" width="584" height="282" /></div>';
		tempHtml += '</div>';
		tempHtml += '<div id="galleryPrevious"><a href="#" onclick="galleryShow(' + galleryObjectIndex + ', \'-\'); return false"><img src="' + galleryObject.levelString + 'images/gallery-previous.png" /></a></div>';
		tempHtml +=  '<div id="galleryNext"><a href="#" onclick="galleryShow(' + galleryObjectIndex + ', \'+\'); return false"><img src="' + galleryObject.levelString + 'images/gallery-next.png" /></a></div>';
		galleryDiv.innerHTML = tempHtml;
		setTimeout('galleryShow(' + galleryObjectIndex + ', \'+\')', 1);	
	}
	
	
}


var myFade = null;
function galleryShow(galleryObjectIndex, direction) {

	galleryObject = galleryObjects[galleryObjectIndex];
	galleryArray = galleryObject.galleryArray;
	
	var galleryCount = galleryArray.length;

	if (direction == '-') {
		if (galleryObject.imageID > 0) {
			galleryObject.imageID --;
		}
	} else if (direction == '+') {
		if (galleryObject.imageID + 1 < galleryCount) {

			galleryObject.imageID ++;
		}
	}

	
	// move current image to the background
	document.getElementById('galleryImage_2').src = document.getElementById('galleryImage').src; 
	
	// set the front image to (nearly) invisible
	document.getElementById('galleryImage').style.opacity = '.01'; 
	document.getElementById('galleryImage').style.filter = 'alpha(opacity = 1)';
	
	// place the new image on top
	document.getElementById('galleryImage').src = galleryObject.levelString + galleryArray[galleryObject.imageID][2];
	document.getElementById('galleryImage').alt = galleryArray[galleryObject.imageID][3];
	
	if (myFade != null) {
			myFade.stop();
	}
	myFade = new Fx.Style(document.getElementById('galleryImage'), 'opacity', {duration: 700});
	myFade.start(0.01, 1);	
	
	infoLink = createLink(galleryArray[galleryObject.imageID][6], galleryArray[galleryObject.imageID][7], galleryArray[galleryObject.imageID][8], galleryArray[galleryObject.imageID][9], 'standAlone');
	infoTitle = galleryArray[galleryObject.imageID][4];
	document.getElementById('caseStudyInfo').innerHTML = (infoLink != '') ? infoLink : infoTitle;
	credits = galleryArray[galleryObject.imageID][5];
	document.getElementById('caseStudyCredits').innerHTML = credits;
	
	if (galleryObject.imageID == 0) {
		document.getElementById('galleryPrevious').style.display = 'none';
	} else {
		document.getElementById('galleryPrevious').style.display = 'block';
	}

	if (galleryObject.imageID + 1 == galleryCount) {
		document.getElementById('galleryNext').style.display = 'none';
	} else {
		document.getElementById('galleryNext').style.display = 'block';
	}
	
}

function createLink(linkText, linkUrl, linkLocation, linkTarget, linkClass) {

	if (linkText == null || linkUrl == null || linkText == '' || linkUrl == '' ) {
		return '';
	} else {
		if (linkLocation == 'absolute' && linkUrl.substr(0, 7) != 'http://' && linkUrl.substr(0, 6) != 'ftp://') {
			linkUrl = 'http://' + linkUrl;
		}
		linkClass = (linkClass  == null) ? '' : 'class="' + linkClass + '"';
		var linkHtml = '<a href="' + linkUrl + '" target="' + linkTarget + '" ' + linkClass + '>' + linkText + '</a>';
		return linkHtml
	}
}

var  messageNumber = 1;
function showMessage(direction) { // on the projects page
	if (direction == '+') { // show the next message
		if (document.getElementById('message_' + (messageNumber + 1))) {
			document.getElementById('message_' + messageNumber).style.display = 'none';
			messageNumber ++;
			document.getElementById('message_' + messageNumber).style.display = 'block';
			document.getElementById('message_date').innerHTML = document.getElementById('message_date_' + messageNumber).innerHTML;
		}
	} else { // show the previous message
		if (document.getElementById('message_' + (messageNumber - 1))) {
			document.getElementById('message_' + messageNumber).style.display = 'none';
			messageNumber --;
			document.getElementById('message_' + messageNumber).style.display = 'block';
			document.getElementById('message_date').innerHTML = document.getElementById('message_date_' + messageNumber).innerHTML;
		}
	}

	// change the opacity of the next and previous buttons to indicate availability of next or previous message.
	if (document.getElementById('message_' + (messageNumber + 1))) {
		document.getElementById('next_message').className = 'active';
	} else {
		document.getElementById('next_message').className = 'inactive';
	}
	if (document.getElementById('message_' + (messageNumber - 1))) {
		document.getElementById('previous_message').className = 'active';
	} else {
		document.getElementById('previous_message').className = 'inactive';
	}

}

/* anti 5P4M device */
function callClient(ext, dom, usr) {
	document.location.href = 'mailto:' + usr + '@' + dom + '.' + ext;
}