// myfunctions
// bf aug.2008


scaleWindow();
function scaleWindow(){
	//alert(screen.availHeight);
	if(window.screen.width > 1440) {
		//self.moveTo(0,0);
		self.resizeTo(1200,880); //1200,920
	}	
}

// rollover basisimage auf index / black
var basisImgSrc;
var basisImgWidth;
function showBasis(){
	objImg = document.getElementById('basisTeaser_img');
	basisImgSrc = objImg.src;
	basisImgWidth = objImg.width;
	var h = objImg.height;
	var w = objImg.width;
	objImg.src="images/basis_1.gif";
	objImg.width = Math.round(w/2.5); //(w/2)+"px";  // grösse basis schriftzug, wenn kleiner faktor erhöhen
	var basis_1_height = objImg.height;
	objImg.style.paddingTop = Math.round((h/2)-(basis_1_height/2))+"px";
	//objImg.style.height = h+"px";
	//var h = objImg.height;
	//var w = objImg.width;
	//alert(w+"/"+h);
	objDiv = document.getElementById('basisTeaser_div');
	objDiv.style.backgroundColor="#000000";	
	objDiv.style.zIndex = "999";
}

function showBasisBack(){
	objImg.src = basisImgSrc;
	objImg.width = basisImgWidth;
	//alert(basisImgWidth);
	objDiv.style.backgroundColor="transparent";	
	objImg.style.paddingTop = "0px";
}



function changeZ(){
	tabObj = document.getElementById('div_logo');
	//alert(tabObj.style.zIndex)
	tabObj.style.zIndex=1;
}


// thumb change in current exhibition
function chImg(img, smallID) {
	var bigSrc=document.getElementById("imgBig").src;
	var bigLeg=document.getElementById("imgLegende").innerHTML;
	var smallSrc=document.getElementById("imgSmall_"+smallID).src;
	var smallLeg=document.getElementById("l_txt_"+smallID).innerHTML;
	
	//alert(smallLeg);
	//alert(bigSrc);
	document.getElementById("imgBig").src=smallSrc;
	document.getElementById("imgLegende").innerHTML=smallLeg;
	
	document.getElementById("imgSmall_"+smallID).src=bigSrc;
	document.getElementById("l_txt_"+smallID).innerHTML=bigLeg;
	
}


// on rollover change in comingUp exhibition
function showComingUpImg(img, legende, obj){
	//alert(img);
	if(img=="") img="empty.gif";
	document.getElementById("imgBig").src="images/exhibition/"+img;
	//document.getElementById("imgLegende").innerHTML="<br />"+legende;
	document.getElementById("imgLegende").innerHTML=legende;

	//alert(obj.offsetTop);
	//document.getElementById("divComingUpImg").style.top = obj.offsetTop + 'px';
}

var active=0;
// on rollover change in comingUp exhibition
function showBasisImg(img, legende, id, obj){
	if(active!=0){
		document.getElementById("n_"+active).style.color = "#000000";
		//document.getElementById("e_"+active).style.color = "#000000";
    	//document.getElementById("w_"+active).style.color = "#000000";
	}
	document.getElementById("n_"+id).style.color = "#999999";
	//document.getElementById("e_"+id).style.color = "#999999";
    //document.getElementById("w_"+id).style.color = "#999999";
    document.getElementById("n_"+id).style.outline = "none";
    active=id;

	if(img=="") img="empty.gif";
	//alert(img);
	document.getElementById("imgBig").src="images/basis/"+img;
	//document.getElementById("imgLegende").innerHTML="<br />"+legende;
	document.getElementById("imgLegende").innerHTML=legende;

	//alert(obj.offsetTop);
	//document.getElementById("divComingUpImg").style.top = obj.offsetTop + 'px';
}


// sprachwechsel
function chLang(lang){
	window.location.href = window.location.pathname+"?lang="+lang;
	//window.location.href = window.location.pathname+"?lang="+lang;
	//window.location.href = <?php echo($sNav)?>".php?lang="+lang;
}

var showN=0;
// newsletter
function showNewsletter(){
	if(showN==0) {
		document.getElementById("div_newsletter").style.visibility = 'visible';
		showN=1;
	}else{
		document.getElementById("div_newsletter").style.visibility = 'hidden';
		showN=0;
	}	
}

function hideNewsletter(){
	document.getElementById("div_newsletter").style.visibility = 'hidden';
}


var showNews=0;
// news
function showNewsletter(){
	if(showNews==0) {
		document.getElementById("div_newsletter").style.visibility = 'visible';
		showNews=1;
	}else{
		document.getElementById("div_newsletter").style.visibility = 'hidden';
		showNews=0;
	}	
}

function hideNewsletter(){
	document.getElementById("div_newsletter").style.visibility = 'hidden';
}



// von index zu current
function goCurrent(){
	window.location.href = "current.php";
}


// submit newsleeter
function submitNewsletter(){
	var a = checkemail(document.form1.subscribe_email.value);
	var b = checkemail(document.form1.unsubscribe_email.value);
	if(a || a) document.form1.submit();
	else alert("Please enter the correct email address")
}
function checkemail(str){
	//var str=document.forms[0].unsubscribe_email.value;
	var filter=/^(\w+(?:\.\w+)*)@((?:\w+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
	if (filter.test(str))
		testresults=true
	else{
		//alert("Bitte eine gültige eMail-Adresse eingeben!")
		testresults=false
	}
	return (testresults)
}
/*
function checkbae(){
	if (document.layers||document.getElementById||document.all)
	return checkemail()
	else
	return true
}*/