function openFenster(link,fenster,weite,hoehe)
  {
  open(link,fenster,"width="+weite+",height="+hoehe+", resizable=yes,toolbar=no,scrollbars=yes,screenX=300,screenY=200");
  }  
function openFenster2(link,fenster,weite,hoehe)
  {
  open(link,fenster,"width="+weite+",height="+hoehe+", location=yes,menubar=yes,resizable=yes,toolbar=yes,scrollbars=yes,screenX=100,screenY=100");
  }
function auswahl()
{
    if (document.duo.elements[0].checked) {
	document.forms[1].elements[2].disabled=false;
	document.forms[1].elements[4].disabled=false;
	document.forms[1].elements[6].disabled=false;
	}
	else {
		document.forms[1].elements[2].disabled=true;
		document.forms[1].elements[4].disabled=true;
		document.forms[1].elements[6].disabled=true;
		}
}

<!--[if lt IE 7]>
if(window.navigator.systemLanguage && !window.navigator.language) {
  function hoverIE() {
    var LI = document.getElementById("Navigation").firstChild;
    do {
      if (sucheUL(LI.firstChild)) {
        LI.onmouseover=einblenden; LI.onmouseout=ausblenden;
      }
      LI = LI.nextSibling;
    }
    while(LI);
  }

  function sucheUL(UL) {
    do {
      if(UL) UL = UL.nextSibling;
      if(UL && UL.nodeName == "UL") return UL;
    }
    while(UL);
    return false;
  }

  function einblenden() {
    var UL = sucheUL(this.firstChild);
    UL.style.display = "block"; UL.style.backgroundColor = "silver";
  }
  function ausblenden() {
    sucheUL(this.firstChild).style.display = "none";
  }

  window.onload=hoverIE;
}
<!--[endif]-->

function createMarker(point,html) {
         var marker = new GMarker(point);
         GEvent.addListener(marker, "click", function() {
           marker.openInfoWindowHtml(html);
         });
         return marker;
} 
function showAddress(address,zoom,html) {
  geocoder.getLatLng(
    address,
    function(point) {
      if (!point) {
        alert(address + " not found");
      } else {
        map.setCenter(point, zoom);
        var marker = new createMarker(point,address+html);
        map.addOverlay(marker);
		map.setUIToDefault();
      }
    }
  );
  
} 


 function check(checkbox, senden) {
if(checkbox.checked==true){
senden.disabled = false;
}
else {
senden.disabled = true;
}
}