function changeImg(image, imageIndex){
	document.images[imageIndex].src = image;
	return false;
}

// Anfrage Form

function validateAnfrage(myform) {
	msg = "";
	if(myform.vn.value==""){
		msg = "Bitte geben Sie Ihren Vornamen ein.\n";
	}
	if(myform.nn.value==""){
		msg += "Bitte geben Sie Ihren Nachnamen Vornamen ein.\n";
	}
	if(myform.email.value==""){
		msg += "Bitte geben Sie Ihre E-Mail Adresse ein.\n";
	}else{
		if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(myform.email.value)){
			//OK
		}else{
			msg += "Bitte geben Sie Ihre korrekte E-Mail Adresse ein.\n";
		}
	}
	if(myform.tel.value==""){
		msg += "Bitte geben Sie Ihre Telefonnummer ein.\n";
	}
	if(msg!=""){
		alert(msg);
		return false;
	}
}

// Pop-Up Windows

function info(breite,hoehe,datei,fenstername,scrollbars) {
	var mittehorizontal=(screen.width-breite)/2;
	var mittevertikal=(screen.height-hoehe)/2;
	var eigenschaften="width="+breite+",height="+hoehe+",left="+mittehorizontal+",top="+ mittevertikal+",menubar=no, resizable=no, locationbar=no, statusbar=no, scrollbars="+scrollbars;
	window.open(datei,fenstername,eigenschaften);
}

function confirmwindow(question, gotourl){
	if(confirm(question)){
		top.location.replace(gotourl);
	}
}

function validateSearch(myform) {
	msg = "";
	if(myform.word.value==""){
		msg += "Bitte geben Sie einen Suchbegriff ein.\n";
	}
	if(msg!=""){
		alert(msg);
		return false;
	}
}

// swap image

function MM_swapImgRestore() { //v3.0
		  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
		}

function MM_preloadImages() { //v3.0
		  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
			var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
			if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
		}

function MM_findObj(n, d) { //v4.0
		  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
			d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
		  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
		  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
		  if(!x && document.getElementById) x=document.getElementById(n); return x;
		}

function MM_swapImage() { //v3.0
		  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
		   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
		}
// infofenster
function zentrieren(breite,hoehe,htmldatei,fenstername) {
                var mittehorizontal=(screen.width-breite)/2;
                var mittevertikal=(screen.height-hoehe)/2;
                var eigenschaften="width="+breite+",height="+hoehe+",left="+mittehorizontal+",top="+ mittevertikal;
                window.open(htmldatei,fenstername,eigenschaften);
        }
// tooltips
/*function xstooltip_findPosX(obj) 
{
  var curleft = 0;
  if (obj.offsetParent) 
  {
    while (obj.offsetParent) 
        {
            curleft += obj.offsetLeft
            obj = obj.offsetParent;
        }
    }
    else if (obj.x)
        curleft += obj.x;
    return curleft;
}

function xstooltip_findPosY(obj) 
{
    var curtop = 0;
    if (obj.offsetParent) 
    {
        while (obj.offsetParent) 
        {
            curtop += obj.offsetTop
            obj = obj.offsetParent;
        }
    }
    else if (obj.y)
        curtop += obj.y;
    return curtop;
}

function xstooltip_show(tooltipId, parentId, posX, posY)
{
    it = document.getElementById(tooltipId);
    
    if ((it.style.top == '' || it.style.top == 0) 
        && (it.style.left == '' || it.style.left == 0))
    {
        // need to fixate default size (MSIE problem)
        it.style.width = it.offsetWidth + 'px';
        it.style.height = it.offsetHeight + 'px';
        
        img = document.getElementById(parentId); 
    
        // if tooltip is too wide, shift left to be within parent 
        if (posX + it.offsetWidth > img.offsetWidth) posX = img.offsetWidth - it.offsetWidth;
        if (posX < 0 ) posX = 0; 
        
        x = xstooltip_findPosX(img) + posX;
        y = xstooltip_findPosY(img) + posY;
        
        it.style.top = y + 'px';
        it.style.left = x + 'px';
    }
    
    it.style.visibility = 'visible'; 
}

function xstooltip_show(tooltipId, parentId, posX, posY)
{
    it = document.getElementById(tooltipId);
    it.style.visibility = 'visible'; 
}


function xstooltip_hide(id)
{
    it = document.getElementById(id); 
    it.style.visibility = 'hidden'; 
}
*/
// tests

function zeige(id)
{
document.getElementById(id).style.display = 'block';
}

function verstecke(id)
{
document.getElementById(id).style.display = 'none';
}