var myImages = new Array();
function preloadImages() {
    for (i=0;i<preloadImages.arguments.length;i++) {
        myImages[i] = new Image();
        myImages[i].src = preloadImages.arguments[i];
    }
}

function navigateTo(url) {
	window.location.href = url;
}

// navi aktivieren
function topnavActive() {
	if(document.getElementById("topnav"+topCat)) {
		document.getElementById("topnav"+topCat).style.fontWeight = "bold";
	}
}

function toggleTextbox() {
	if(document.getElementById("textcontent").style.display != "none") {
		document.getElementById("textcontent").style.display = "none";
		document.getElementById("contenttxtbox").style.height = "15px";
		document.getElementById("contenttxtbox").style.width = "100px";
	}
	else {
		document.getElementById("textcontent").style.display = "block";
		document.getElementById("contenttxtbox").style.height = "390px";	
		document.getElementById("contenttxtbox").style.width = "247px";		
	}
}


function nav2active() {
	var lis = document.getElementsByTagName('li');
	for(var i = 0; tag = lis[i]; ++i) {
			if((tag.className == 'level1')||(tag.className == 'level2')) {								
					if(lis[i].firstChild && lis[i].firstChild.href && lis[i].firstChild.href == window.location.href) {
							lis[i].firstChild.style.color = "#"+highlightColor;
							
							if(tag.className == 'level2') {			// von der 2. ebene aus kategorie ausklappen
								lis[i].parentNode.style.display = "block";								
								if(lis[i].parentNode.parentNode.firstChild.style) {
									lis[i].parentNode.parentNode.firstChild.style.color = "#"+highlightColor;
								}
							}
							else if(lis[i].childNodes.length) {		// von der 1. ebene aus kategorie ausklappen
								for(j=0; j<lis[i].childNodes.length; j++) { // alle child nodes durchlaufen und die ul einblenden
									if(lis[i].childNodes[j].tagName == "UL") {
										lis[i].childNodes[j].style.display = "block";		
									}
								}
							}
					}
			  }
	}
}


// popup fenster
function openPwin(theUrl,w,h,scroll) {
        var pwin = window.open(theUrl, 'popwindow', 'width='+w+',height='+h+',top=50, left=100, scrollbars='+scroll+',resizable=yes');
        try { pwin.focus(); } catch(e) {}
}