function bookFav() {
var el = document.getElementById('bookmark');	
if(el) {
//myURL = window.location.href; /* gets url of page to bookmark */
//myTitle = document.title; /* gets title of page */
myURL = 'http://www.rentenrechner24.net';
myTitle = 'RentenRechner24.net';
//alert(myURL);
//alert(myTitle);
el.onClick = addFav(myURL,myTitle); /* this event is supposed to open the bookmark dialog */
}
}
function addFav(aURL,aTitle) {
if (document.all) { /* is this MSIE? */
window.external.AddFavorite(aURL,aTitle); /* if yes then call bookmark for MSIE */
} else if (window.sidebar) {
window.sidebar.addPanel(aTitle,aURL,''); /* else call bookmark for NS and FF */
} else { 
alert('Bitte fügen Sie die Seite manuell hinzu!'); 
}
}