if (document.images)
    {
      preload_image_object = new Image();
      // set image url
      image_url = new Array();
      image_url[0] = "http://www.webdesign-hardware-multimedia.eu/images/interface/pvpart_golf.jpg";
      image_url[1] = "http://www.webdesign-hardware-multimedia.eu/images/interface/pvpart_nieuws.jpg";
      image_url[2] = "http://www.webdesign-hardware-multimedia.eu/images/interface/pvpart_webwinkel.jpg";
      image_url[3] = "http://www.webdesign-hardware-multimedia.eu/images/interface/pvpart_contact.jpg";

       var i = 0;
       for(i=0; i<=3; i++) 
         preload_image_object.src = image_url[i];
    }



function show_memo(page){
	/*document.getElementById('memo').style.display='block';*/
	document.getElementById('memo').innerHTML="[:: " + page + "::]";
	
	if(page=='home'){
	document.getElementById('foto_header').src='images/interface/pvpart_golf.jpg';
	}
	
	if(page=='webwinkel'){
	document.getElementById('foto_header').src='images/interface/pvpart_webwinkel.jpg';
	}
	
	if(page=='contact'){
	document.getElementById('foto_header').src='images/interface/pvpart_contact.jpg';
	}
	
	if(page=='nieuws'){
	document.getElementById('foto_header').src='images/interface/pvpart_nieuws.jpg';
	}
}

function hide_memo(){
	if(page=='' || page=='home'){
		document.getElementById('foto_header').src='images/interface/pvpart_golf.jpg';
	}else if(page=='webwinkel'){
		document.getElementById('foto_header').src='images/interface/pvpart_webwinkel.jpg';
	}else if(page=='nieuws'){
		document.getElementById('foto_header').src='images/interface/pvpart_nieuws.jpg';
	}else if(page=='contact'){
		document.getElementById('foto_header').src='images/interface/pvpart_contact.jpg';
	}
}