function showAnswers(panel) {
	$("#"+panel).toggle();
}

function save(exno, url) {
	saveCount = 0;
	redirect = url;
	
	for (var widget in myObjects) { 
		eval(myObjects[widget]).save();	
	}

	/*if (url) {
		window.location = url;
	}*/
}

function counter() {
	saveCount++;
	
	if (redirect && saveCount==myObjects.length) {
		window.location = redirect;
	}
}

function isArray(obj) {
	if (obj.constructor.toString().indexOf("Array") == -1)
	  return false;
	else
	  return true;
}

function serialize(id, strip, rep) { 
        serialData = []; 
		
        var submitData = ''; 
        list = $('#'+ id + " li"); 
		
		if (strip != "") {
			id = id.replace(strip,"");
		}
		
        for (var count = 0; count < (list.length); count++) { 
                var thisElementId = list[count].getAttribute('id'); 
				
				if (rep != "") {
					thisElementId = $("#"+thisElementId+" .item").html();
					thisElementId = thisElementId.replace(/'/g,"%27");
				}
				
                 submitData += id + '[]=' + thisElementId + '&'; 
        } 
		
        return submitData; 
}

function togglePopup(panel) {
	$(".popup-panel").hide();
	$("#"+panel+"-panel").show();
}

function doRegister() {

	var first = $("#first_name").val();
	var surname = $("#surname").val();
	var email = $("#email").val();
	var user = $("#username").val();
	var pass = $("#password").val();
	var conf = $("#confirm").val();
	
	var data = "first=" + first + "&";
	data += "surname=" + surname + "&";
	data += "email=" + email + "&";
	data += "user=" + user + "&";
	data += "pass=" + pass + "&";
	
	if (!first || !surname || !email || !user || !pass || !conf) {
		$("#regError").html("Error: You must complete all fields.").show();
	} else {
		if (pass != conf) {
			$("#regError").html("Error: Passwords do not match!").show();
		} else {
			$("#regError").hide();
			$.post("process.php?action=register",data,function(data,status) {
				if (data.success == 1) {
					$("#confUser").html(data.username);
					$("#confPass").html(data.password);
					togglePopup('confirm');
				} else {
					if (data.existing == 1) {
						$("#regError").html("Error: The email address is already in use.").show();
					}
					if (data.existing == 2) {
						$("#regError").html("Error: The username is already in use.").show();
					}
				}
			},'json');	
		}
	}
}
function doLogin() {

	var user = $("#lusername").val();
	var pass = $("#lpassword").val();
	
	var data = "user=" + user + "&";
	data += "pass=" + pass + "&";
	
	if (!user || !pass) {
		$("#logError").html("You must enter your username and password.").show();
	} else {
		$("#regError").hide();
		$.post("process.php?action=login",data,function(data,status) {
			if (data.success == 1) {
				togglePopup('path');
				//window.location= '/unit1/';
			} else {
				if (data.invalid == 1) {
					$("#logError").html("Error: Your username and password are incorrect.").show();
				}
			}
		},'json');	
	}
}
function doResend() {

	var email = $("#fgtemail").val();
	
	var data = "email=" + email + "&";
	
	if (!email) {
		$("#fgtError").html("You must enter your email address.").show();
	} else {
		$("#fgtError").hide();
		$.post("process.php?action=resend",data,function(data,status) {
			if (data.success == 1) {
				$("#fgtError").html("Your login details have been emailed to you.").show();
			} else {
				if (data.invalid == 1) {
					$("#fgtError").html("Error: Unable to find your account.").show();
				}
			}
		},'json');	
	}
}

function fontSizer(font,reload) {

	if (font) {
		Set_Cookie('ditwFontSize', font, 30, '/', '', '' );
		window.location.reload();
	} else {
		if ( Get_Cookie( 'ditwFontSize' ) ) {
			fontSizer(parseInt(Get_Cookie('ditwFontSize')),false);
		}
	}
}

function Set_Cookie( name, value, expires, path, domain, secure ) {
	// set time, it's in milliseconds
	var today = new Date();
	today.setTime( today.getTime() );

	/*
	if the expires variable is set, make the correct
	expires time, the current script below will set
	it for x number of days, to make it for hours,
	delete * 24, for minutes, delete * 60 * 24
	*/
	if ( expires )
	{
	expires = expires * 1000 * 60 * 60 * 24;
	}
	var expires_date = new Date( today.getTime() + (expires) );

	document.cookie = name + "=" +escape( value ) +
	( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) +
	( ( path ) ? ";path=" + path : "" ) +
	( ( domain ) ? ";domain=" + domain : "" ) +
	( ( secure ) ? ";secure" : "" );
}

function Delete_Cookie( name, path, domain ) {
	if ( Get_Cookie( name ) ) document.cookie = name + "=" +
	( ( path ) ? ";path=" + path : "") +
	( ( domain ) ? ";domain=" + domain : "" ) +
	";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}

function Get_Cookie( check_name ) {
	// first we'll split this cookie up into name/value pairs
	// note: document.cookie only returns name=value, not the other components
	var a_all_cookies = document.cookie.split( ';' );
	var a_temp_cookie = '';
	var cookie_name = '';
	var cookie_value = '';
	var b_cookie_found = false; // set boolean t/f default f

	for ( i = 0; i < a_all_cookies.length; i++ )
	{
		// now we'll split apart each name=value pair
		a_temp_cookie = a_all_cookies[i].split( '=' );


		// and trim left/right whitespace while we're at it
		cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, '');

		// if the extracted name matches passed check_name
		if ( cookie_name == check_name )
		{
			b_cookie_found = true;
			// we need to handle case where cookie has no value but exists (no = sign, that is):
			if ( a_temp_cookie.length > 1 )
			{
				cookie_value = unescape( a_temp_cookie[1].replace(/^\s+|\s+$/g, '') );
			}
			// note that in cases where cookie is initialized but no value, null is returned
			return cookie_value;
			break;
		}
		a_temp_cookie = null;
		cookie_name = '';
	}
	if ( !b_cookie_found )
	{
		return null;
	}
}