var slideshowArray = new Object();
var currentSlide = 0;
var totalSlides = 0;

function initSlideshow() {
	playSlideshow();
}
function playSlideshow() {
	setTimeout(function(){changeSlide();}, 10000);
}
function changeSlide() {
	if(currentSlide < totalSlides) {
		currentSlide ++;
	} else {
		currentSlide = 0;
	}
	temp = slideshowArray[currentSlide];
	$('#slideshow img').attr('src', temp);
	playSlideshow();
}
function manageUserClasses() {
	allClassesSelectBox = '#AllWorkshopClassClasses';
	studentSelectBox = '#StudentWorkshopClassClasses';
	$('#addToStudent').click(function() {
		classesToAdd = $(allClassesSelectBox+' option:selected');
		currentClasses = $(studentSelectBox+' option');
		for(i = 0; i < classesToAdd.length; i++) {
			addClassInfo = $(classesToAdd[i]).text();
			addClassVal = $(classesToAdd[i]).val();
			unMatched = true;
			for(j = 0; j < currentClasses.length; j++) {
				currentClassVal = $(currentClasses[j]).val();
				if(addClassVal == currentClassVal) {
					unMatched = false;
					break;
				}
			}
			if(unMatched) {
				classOptionToAdd = $(classesToAdd[i]).clone();
				$(classOptionToAdd).appendTo(studentSelectBox);
				$('#studentWorkshopClasses').append('<input id="StudentWorkshopClassSelected'+addClassVal+'Id" type="hidden" value="'+addClassVal+'" name="data[StudentWorkshopClass][Selected]['+addClassVal+'][id]">');
				$('#studentWorkshopClasses').append('<input id="StudentWorkshopClassSelected'+addClassVal+'Info" type="hidden" value="'+addClassInfo+'" name="data[StudentWorkshopClass][Selected]['+addClassVal+'][info]">');
			} else {
				alert('Student is already in '+addClassInfo);
			}
		}
	});
	$('#removeFromStudent').click(function() {
		/* classId = $(studentSelectBox+' option:selected').attr('value'); */
		classSelects = $(studentSelectBox+' option:selected');
		for(i = 0; i < classSelects.length; i++) {
			classId = $(classSelects[i]).val();
			$('#StudentWorkshopClassSelected'+classId+'Id').remove();
			$('#StudentWorkshopClassSelected'+classId+'Info').remove();
		}
		$(studentSelectBox+' option:selected').remove();
	});
}

function initSelectAll() {
	$('#SelectAllChecked').click(
	   function()
	   {
	      $("INPUT[type='checkbox']").attr('checked', $(this).is(':checked'));   
	   }
	);
}