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

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		king_over = newImage("img/thumb/king2.jpg");
		queen_over = newImage("img/thumb/queen2.gif");
		cobra3_over = newImage("img/thumb/cobra32.gif");
		junior_over = newImage("img/thumb/junior2.gif");
		trawler_over = newImage("img/thumb/trawler2.gif");
		explorer_over = newImage("img/thumb/explorer2.gif");
		preloadFlag = true;
	}
}

var isIE     = (navigator.appName.indexOf('Microsoft')   != -1);
function myopen(link,w,h) 
{
  if(isIE){
    w+=20;
    h+=20;
  }
	mymut = window.open(link,'Afbeelding','width='+w+',height='+h+',menubar=no,toolbars=no,scrollbars=yes');
}