preload_1 = new Image();
preload_1.src = "/design/skin/nav_02.gif";
preload_2 = new Image();
preload_2.src = "/design/skin/nav_02a.gif";
preload_3 = new Image();
preload_3.src = "/design/skin/nav_02b.gif";
preload_4 = new Image();
preload_4.src = "/design/skin/nav_01.gif";
preload_5 = new Image();
preload_5.src = "/design/skin/nav_01a.gif";
preload_6 = new Image();
preload_6.src = "/design/skin/nav_01b.gif";


function showContent(hidethis, showthis) {
    document.getElementById(hidethis).style.display = 'none';
    document.getElementById(showthis).style.display = '';
    
    return false; 
}


function showElement(element) {
    var dom_element = document.getElementById(element);
    if (dom_element != null) dom_element.style.display = '';
    
    return false; 
}

function hideElement(element) {
    var dom_element = document.getElementById(element);
    if (dom_element != null) dom_element.style.display = 'none';
    
    return false; 
}

function setClass(element, name) {
    element.className = name;
}

function replace_string(sd,sf,sr,ic) {
    /* Offered freely by Darren J Semotiuk, Collaborative Learning Network Inc., http:////www.co-learn.net/ Just keep this comment line intact. Thanks! */
    if(arguments.length<3||sf==""||sd==""||typeof("".split) !="function")return(sd); if(!(ic))return(sd.split(sf)).join(sr); sf=sf.toLowerCase();var rv="";var ix=sd.toLowerCase().indexOf(sf);while(ix>-1) {rv+=sd.substring(0,ix)+sr;sd=sd.substring(ix+sf.length);ix=sd.toLowerCase().indexOf(sf);};return(rv+sd);
}

function checkTime() {
	$date = new Date();$day = $date.getDate();$month = $date.getMonth()+1;$hours = $date.getHours();$minutes = $date.getMinutes();
    $time  = $month < 10 ? "0" + $month : "" + $month;$time += $day < 10 ? "0" + $day : $day;$time += $hours < 10 ? "0" + $hours : $hours;$time += $minutes < 10 ? "0" + $minutes : $minutes;
	document.write('<img src="/users/settime/?time=' + $time + '" alt="" />');
}

function replaceThumbnail(a,b) {
    var dom_thumb = document.getElementById('thumbnail');
    var dom_thumb_wait = document.getElementById('thumbnail_wait');
    c = dom_thumb.src;
    var link = document.getElementById('zoominlink');
    if (link != undefined) link.innerHTML = c==a?"Vollansicht":"Vorschau";
    dom_thumb.src=dom_thumb_wait.src;
    setTimeout('replaceThumbnail2(\'' + (c==a?b:a) + '\')', 50);
    
}

function replaceThumbnail2(d) {
    var dom_thumb = document.getElementById('thumbnail');
    dom_thumb.src=d;
}