var isNS4 = isIE4 = isNS6 = false;
var path = (site!=null)? "../" : "";

function clientCheck() {
	if (navigator.appName.indexOf("Microsoft")>-1){
		isIE4 = true;
	}
	else if (navigator.appName=="Netscape") {
		if (parseInt(navigator.appVersion)==4){
			isNS4 = true;
			alert("Ihr Netscape Browser wird nicht unterstützt.\nBitte besuchen Sie die Seite mit Browserversion 6+ oder InternetExplorer ab Version 4+");
		}
		else if (parseInt(navigator.appVersion)>=5) {
			isNS6 = true;
		}
	}
	else {	alert("Unknown Browser!\nBitte verwenden Sie einen Netscape-(NS6+) oder MS-Browser(IE4+)!"); }
}
clientCheck();

var button = new Array();
var button_o = new Array();
function navload(){
	for(var i=1; i < 10; i++){
	                button[i] = new Image();
	                button[i].src = path + "img/button_0" + i + ".gif";
					button_o[i] = new Image();
	                button_o[i].src = path + "img/button_0" + i + "_o.gif";
	}
}
navload();

function chgImg(imgLayer,imgName,imgObject,imgUrl){
	var imgInterim = (imgObject!=0)?imgObject.src:imgUrl;
	if(isIE4) eval("document.all."+ imgLayer +".document." + imgName + ".src = \""+ imgInterim +"\"");
	if(isNS4) eval("document."+ imgLayer +".document.images['"+ imgName +"'].src = \""+ imgInterim +"\"");
	if(isNS6) eval("document.getElementById(\""+imgName+"\").src = \""+imgInterim+"\"");
}

function setBGcolor(item,color){
if(isIE4) eval("document.all." + item + ".style.backgroundColor='" + color + "'");
if(isNS4){}
if(isNS6) eval("document.getElementById('" + item + "').style.backgroundColor='" + color + "'");
}

function setColor(item,color){
if(isIE4) eval("document.all." + item + ".style.color='" + color + "'");
if(isNS4){}
if(isNS6) eval("document.getElementById('" + item + "').style.color='" + color + "'");
}

function timeColor(){
var jetzt = new Date();
var m = jetzt.getMinutes();
var hex = "#000000";
if((0<=m)&&(m<=9)) hex = "#591B00";
if((10<=m)&&(m<=18)) hex = "#513D00";
if((17<=m)&&(m<=23)) hex = "#404400";
if((24<=m)&&(m<=30)) hex = "#00332C";
if((31<=m)&&(m<=37)) hex = "#000000";
if((38<=m)&&(m<=44)) hex = "#000342";
if((45<=m)&&(m<=51)) hex = "#3C0015";
if((52<=m)&&(m<=59)) hex = "#000000";
//591B00(drot) 513D00(sepia) 404400(dgruen) 00332C(dtuerkis) 000342(dblau) 3C0015(dvio)
//alert(m);
setColor('tr_text',hex);
setBGcolor('td_title',hex);
setBGcolor('tr_nav',hex);
}

function showLayer(layerName){
	if(isIE4) eval("document.all."+ layerName +".style.visibility = \"visible\"");
	if(isNS4) eval("document."+ layerName +".visibility = \"visible\"");
	if(isNS6) eval("document.getElementById('"+layerName+"').style.visibility = \"visible\"");
}

function hideLayer(layerName){
	if(isIE4) eval('document.all.'+ layerName +'.style.visibility = \'hidden\'');
	if(isNS4) eval('document.'+ layerName +'.visibility = \'hidden\'');
	if(isNS6) eval("document.getElementById('"+layerName+"').style.visibility = \'hidden\'");
}