/**
 * Extending the Array object for browsers that don't support JavaScript1.6
 */
if (!Array.prototype.indexOf) {
	Array.prototype.indexOf = function(val, fromIndex) {
		if (typeof(fromIndex) != 'number') fromIndex = 0;
		for (var index = fromIndex,len = this.length; index < len; index++) {
			if (this[index] == val) return index;
		}
		return -1;
	}
}

function submitRegalia() {
	isValid = true;
	var errors = new Array();

	var awardTypeObj = new getObj('award_type_img');
	var awardType = awardTypeObj.obj.value;

	var sashColourObj = new getObj('sash_colour_img');
	var sashColour = sashColourObj.obj.value;

	var gownObj = new getObj('gown');
	var gownVal = gownObj.obj.options[gownObj.obj.options.selectedIndex].value;

	if (awardType.length == 0) {
		errors.push('Award must be specified');
	}

	if (awardType != 'doctor' && awardType != 'diploma' && sashColour.length == 0) {
		errors.push('Sash colour must be specified');
	}

	if (gownVal == 'no size selected') {
		errors.push('For gown orders, we need to know your height. Please specify how tall you are from the Gown options.');
	}

	if (errors.length > 0) {
		msg = 'Please note the following information:\n';
		msg += errors.join('\n');
		alert(msg);
		isValid = false;
	}
	
	return isValid;
}

function changeAward(selectElem) {
	updateRegaliaDisplay();
}

function changeRegaliaItem(thisItem, selectElem) {
	updateRegaliaDisplay();
}

function updateRegaliaDisplay(awardChange) {
	var imageFile = 'images/regalia/';
	var regaliaItemsFieldsetObj = new getObj('regaliaitems_fieldset');
	var awardTypeObj = new getObj('award_type_img');
	var awardType = awardTypeObj.obj.value;
	var sashColourObj = new getObj('sash_colour_img');
	var sashColour = sashColourObj.obj.value;
	
	if (awardType.length == 0 || (awardType != 'doctor' && awardType != 'diploma' && sashColour.length == 0)) {
		regaliaItemsFieldsetObj.style.display = 'none';
		sashColourObj.style.visibility = 'visible';
	} else {
		var mortarboardAttObj = new getObj('mortarboard_attrib');
		var mortarboardObj = new getObj('mortarboard');
		var mortarboardVal = mortarboardObj.obj.options[mortarboardObj.obj.options.selectedIndex].value;
		var tasselAttObj = new getObj('tassel_attrib');
		var tasselObj = new getObj('tassel');
		var tasselVal = tasselObj.obj.options[tasselObj.obj.options.selectedIndex].value;
		var tudorbonnetAttObj = new getObj('tudorbonnet_attrib');
		var tudorbonnetObj = new getObj('tudorbonnet');
		var tudorbonnetVal = tudorbonnetObj.obj.options[tudorbonnetObj.obj.options.selectedIndex].value;
		var sashAttObj = new getObj('sash_attrib');
		var sashObj = new getObj('sash');
		var sashVal = sashObj.obj.options[sashObj.obj.options.selectedIndex].value;
		var gownObj = new getObj('gown');
		var gownVal = gownObj.obj.options[gownObj.obj.options.selectedIndex].value;

		var mortarboardTipObj = new getObj('mortarboard_tip');
		var tudorbonnetTipObj = new getObj('tudorbonnet_tip');
		var sashTipObj = new getObj('sash_tip');

		var mortarboardNoteObj = new getObj('mortarboard_note');
		var tudorbonnetNoteObj = new getObj('tudorbonnet_note');

		regaliaItemsFieldsetObj.style.display = 'block';
		//regaliaItemsFieldsetObj.style.visibility = 'visible';

		if (awardType == 'doctor') {
			mortarboardAttObj.style.display = 'none';
			mortarboardTipObj.style.display = 'none';
			mortarboardNoteObj.style.display = 'none';
			tudorbonnetAttObj.style.display = 'block';
			tudorbonnetTipObj.style.display = 'block';
			tudorbonnetNoteObj.style.display = 'block';
			sashAttObj.style.display = 'none';
			sashTipObj.style.display = 'none';
		} else if (awardType == 'diploma') {
			mortarboardAttObj.style.display = 'none';
			mortarboardTipObj.style.display = 'none';
			mortarboardNoteObj.style.display = 'none';
			sashAttObj.style.display = 'none';
			sashTipObj.style.display = 'none';
		} else {
			tudorbonnetAttObj.style.display = 'none';
			tudorbonnetTipObj.style.display = 'none';
			tudorbonnetNoteObj.style.display = 'none';
			mortarboardAttObj.style.display = 'block';
			mortarboardTipObj.style.display = 'block';
			sashAttObj.style.display = 'block';
			sashTipObj.style.display = 'block';
		}

		if (awardType == 'master') {
			// Masters must wear a mortarboard, but may BYO and opt to buy a gold tassel
			mortarboardNoteObj.style.display = 'block';
			if (mortarboardVal != '' && tasselVal == '') {
				tasselAttObj.style.display = 'none';
			} else {
				tasselAttObj.style.display = 'block';
			}
		} else {
			mortarboardNoteObj.style.display = 'none';
			tasselAttObj.style.display = 'none';
		}

		var itemTypes = new Array('mortarboard', 'tudorbonnet', 'sash', 'gown');
		for (typeCount = 0; typeCount < itemTypes.length; typeCount ++) {
			var thisType = itemTypes[typeCount];
			var itemTypeObj = new getObj(thisType);
			var tipObj = new getObj(thisType + '_tip');
			var tipValObj = new getObj(thisType + '_tip_val');
			var itemTypeVal = itemTypeObj.obj.options[itemTypeObj.obj.options.selectedIndex].value;
			if (itemTypeVal == '') {
				tipObj.obj.className = 'tip tip-off';
				tipValObj.obj.className = '';
				tipValObj.obj.innerHTML = 'None';
			} else {
				tipObj.obj.className = 'tip';
				tipValObj.obj.className = 'goodval';
				tipValObj.obj.innerHTML = itemTypeVal;
			}
		}

		imageFile += awardType;
		var backgroundImageFile = imageFile;
		var sashPreloaderImageFile = imageFile;
		var hatImageFile = imageFile;
		var gownImageFile = imageFile;

		if (awardType == 'doctor') {
			// no sash and different background photo for PhD
			if (gownVal.length == 0) {
				backgroundImageFile += '-gown';
			}
			sashColourObj.style.visibility = 'hidden';
		} else if (awardType == 'diploma') {
			// no sash for Diploma (of commerce)
			sashColourObj.style.visibility = 'hidden';
		} else {
			sashPreloaderImageFile += '-' + sashColour;
			if (sashVal.length > 0) {
				backgroundImageFile += '-' + sashColour;
			}
			sashColourObj.style.visibility = 'visible';
		}

		var hatImageObj = new getObj('hat_img');
		if (awardType == 'diploma') {
			// hide hat for diploma
			hatImageObj.style.display = 'none';
		} else if (awardType == 'doctor') {
			// show tudor bonnet for doctor
			if (tudorbonnetVal.length > 0) {
				hatImageObj.style.display = 'block';
			} else {
				hatImageObj.style.display = 'none';
			}
		} else {
			// show mortarboard for everyone else
			if (mortarboardVal.length > 0) {
				hatImageObj.style.display = 'block';
			} else {
				hatImageObj.style.display = 'none';
			}
		}

		var gownImageObj = new getObj('gown_img');
		if (gownVal.length > 0) {
			gownImageObj.style.display = 'none';
		} else if (awardType != 'doctor') {
			gownImageObj.style.display = 'block';
		}

		var displayObj = new getObj('regaliaDisplay');
		displayObj.style.backgroundImage = 'url(' + backgroundImageFile + '.jpg)';
		var sashPreloaderObj = new getObj('sash_preloader');
		sashPreloaderObj.obj.innerHTML = '<img src="' + sashPreloaderImageFile + '.jpg' + '" height="400" width="300" alt="Regalia" />';

		// IE doesn't support switching image src, so just rewrite the HTML to change images!
		hatImageObj.obj.innerHTML = '<img src="' + hatImageFile + '-hat.png' + '" height="400" width="300" alt="Hat" />';
		if (awardType != 'doctor') {
			gownImageObj.obj.innerHTML = '<img src="' + gownImageFile + '-gown.png' + '" height="400" width="300" alt="Gown" />';
		} else {
			gownImageObj.obj.innerHTML = '';
		}

		// now, fix the PNG transparency for IE
		if (window.attachEvent) {
			correctPNG();
		}
	}
}

function launchDemoVid(awardType) {
	if (awardType == null) awardType = '';
	windowFeatures = 'height=670,width=780,location=0,toolbar=0,resizable=1,scrollbars=1';
	regaliaVideo = window.open('regalia_video.php?awardType=' + awardType, 'regaliaVideo', windowFeatures);
}

function launchHireTerms() {
	windowFeatures = 'height=600,width=780,location=0,toolbar=0,resizable=1,scrollbars=1';
	regaliaHireTerms = window.open('regalia_hireterms.php', 'regaliaHireTerms', windowFeatures);
}