var contentWidth = 821;
var minWinWidth = 841;

var myImages = new Array();


function calculateLeftmargin() {
	if(window.innerWidth) {
		width = window.innerWidth;		
	}
	else if(document.body) {
		width = document.body.offsetWidth;
	}
	
	if(width < minWinWidth) {
		width = minWinWidth;
	}
	leftmargin = (width-contentWidth)/2;		
	leftmargin -= 10; //scrollbar
	return(leftmargin);
}

function setLeftmargin() {
	leftMargin = calculateLeftmargin();
	document.getElementById("mainbox").style.left = leftMargin;
	document.getElementById("mainbox").style.display = "";
}


function naviOver(i) {
	document.getElementById(i).src = "img/navimg/"+i+"_act.gif";
}

function naviOut(i) {
	thisFilename = extractFilename();
	
	if(i != thisFilename) {
		document.getElementById(i).src = "img/navimg/"+i+"_pas.gif";
	}	
}


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

function extractFilename() {
	var thisUrl = window.location.href;
	urlArray = thisUrl.split("/");
	arrayLength = urlArray.length - 1;
	
	var thisFilename = urlArray[arrayLength];
	filenameArray = thisFilename.split(".");
	thisFilename = filenameArray[0];
	
	if(!thisFilename || (thisFilename == "index_neu")) {
		thisFilename = "index";
	}
	
	if((thisFilename == "kontakt_ok") || (thisFilename == "kontakt_error")) {
		thisFilename = "kontakt";
	}
	
	return(thisFilename);
}


function makeNav1Active() {
	thisFilename = extractFilename();
	document.getElementById(thisFilename).src = "img/navimg/"+thisFilename+"_act.gif";	
}


function popNewsletter(inout) {
	address = document.forms["optinout"].elements[0].value;
	if(address && (address!="Ihre E-Mailadresse")) {
		var url = "http://letters.popletter.com/komitee/optinout.php?inOut="+inout+"&address="+address+"&l=12";
		window.open(url,"optWin","width=250,height=200,top=50,left=100,scrollbars=no");
	}
	else {
		alert("Bitte geben Sie eine Adresse ein.");
	}
}

function openDisclaimer() {
	disclaimer = window.open("disclaimer.html","disclWin","width=650,height=450,top=50,left=100,scrollbars=yes");
    disclaimer.focus();
}

function openEvent(elementID) {
    window.open("event_details.php?elementID="+elementID,"eventWin","width=410,height=470,top=50,left=100,scrollbars=yes");
}