function openvenster(url, width, height, parameters) {
x=1;
y=1;
if (width == "" || width<=0) {
 width=300;
}
if (height == "" || height<=0) {
 height=350;
}
if (parameters == "") {
 parameters = "resizable=0,status=0,toolbar=0,scrollbars=0";
}
if(window.screen){
 per_ancho=(width/screen.width)*100;
 per_alto=(height/width)*100;
 win_ancho=(screen.width*per_ancho)/100;
 win_alto=(win_ancho*per_alto)/100;
 x=(screen.width-win_ancho)/2;
 y=(screen.height-win_alto)/2;
 y=y-40;
 if (y<0) {
  y=0;
  }
 }
w=window.open(url,"venstertje","width="+width+",height="+height+",left="+x+",top="+y+","+parameters);
if (window.screen) {
 w.focus();
 }
}



function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		buthome_over = newImage("images/buthome-over.jpg");
		butdvd_over = newImage("images/butdvd-over.jpg");
		buttrailer__over = newImage("images/buttrailer--over.jpg");
		buttekoop_over = newImage("images/buttekoop-over.jpg");
		butlinks_over = newImage("images/butlinks-over.jpg");
/*
		defilms_Layer_30_over = newImage("images/defilms_Layer-30-over.gif");
		defilms_Layer_32_over = newImage("images/defilms_Layer-32-over.gif");
		defilms_Layer_33_over = newImage("images/defilms_Layer-33-over.gif");
		defilms_Layer_31_over = newImage("images/defilms_Layer-31-over.gif");
		defilms_Layer_34_over = newImage("images/defilms_Layer-34-over.gif");
		defilms_Layer_35_over = newImage("images/defilms_Layer-35-over.gif");
*/
		preloadFlag = true;
	}
}

function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);