/**
* Stellt die Funktionalität für AccessKey-Ein/Ausblendung zur Verfügung
*
* @package madChickAccessKey
* @author Ralf Glaser
*
*
* Script einbinden:
* =================
*
*
*
* Links mit AccessKeys einbinden:
* =======================
* 1 Punkt 1
* 2 Punkt 2
* 3 Punkt 3
*
* Wenn AccessKeys standardmäßig ausgeblendet sein sollen muss in der
* CSS-Klasse "accessKey" visiblity:hidden gesetzt sein
*
*/
function madChickAccessKeyEngine() {
var machine=this;
this.cookieName='madChickAccessKey';
this.states=new Array('hidden','visible');
this.idPrefix='accessKey_';
this.accessKeyVisibility=this.states[0];
this.timerObj=false;
/*********************/
/* public */
/*********************/
// --------------------------------------------------------------------------------
this.changeVisibility= function() {
this.accessKeyVisibility=(this.accessKeyVisibility==this.states[1] ? this.states[0] : this.states[1]);
this.setVisibility();
this.setCookie();
}
/*********************/
/* private */
/*********************/
// --------------------------------------------------------------------------------
this.init= function() {
this.readCookie();
this.timerObj=setInterval(this.onLoadFunction,500);
}
// --------------------------------------------------------------------------------
this.onLoadFunction=function() {
// must be defined seperate, otherwise IE5 crashes!
// use 'machine', not 'this'
if (document.getElementsByTagName('body')[0] && document.getElementsByTagName('body')[0].lastChild) {
clearInterval(machine.timerObj);
machine.setVisibility();
}
}
// --------------------------------------------------------------------------------
this.checkLoaded= function() {
if (document.getElementsByTagName('body')[0] && document.getElementsByTagName('body')[0].lastChild) {
return true;
} else {
return false;
}
}
// --------------------------------------------------------------------------------
this.readCookie= function() {
var cookieStart=document.cookie.indexOf(this.cookieName+'=');
if (cookieStart>-1) {
cookieStart+=this.cookieName.length+1;
var cookies=document.cookie;
var cookieEnd=cookies.indexOf(';',cookieStart);
cookieEnd=(cookieEnd>0 ? cookieEnd : cookies.length);
this.accessKeyVisibility=(cookies.substring(cookieStart,cookieEnd).toLowerCase()==this.states[1] ? this.states[1] : this.states[0]);
} else {
this.accessKeyVisibility=this.states[0];
}
}
//-----------------------------------------------------------------------------
this.setCookie=function() {
if (navigator.cookieEnabled==true) {
// store in cookie
document.cookie=this.cookieName+'='+this.accessKeyVisibility+'; path=/; domain='+location.host;
} else {
alert('Ihr Browser ist so eingestellt, dass er das Setzen eines Cookies nicht zuläßt.\n\nDie Schriftgrößen-Einstellung kann deshalb nicht dauerhaft gespeichert werden.');
}
}
// --------------------------------------------------------------------------------
this.setVisibility= function() {
for (i=0;i<10;i++) {
if (this.getStyleObj(this.idPrefix+i)) {
this.getStyleObj(this.idPrefix+i).visibility=this.accessKeyVisibility;
}
}
}
// --------------------------------------------------------------------------------
this.getStyleObj= function(id) {
return (document.getElementById && document.getElementById(id) ? document.getElementById(id).style : false);
}
this.init();
}
madChickAccessKey=new madChickAccessKeyEngine();