function openAsset(assetName, assetID, widthInPixels, heightInPixels)
{
	if (widthInPixels == "") {
		widthInPixels = 990;
	}
	if (heightInPixels == "") {
		heightInPixels = 650;
	}
	
	var strPopUpUrl = "/instructiemiddelen/tonen/"+ assetID +"/";
	
	var timeStamp = Number(new Date());
	var myWindowName = "DigitalLearning"+ timeStamp;
	
	var MyWnd = window.open(strPopUpUrl, myWindowName, 'width='+widthInPixels+',height='+heightInPixels+',resizable=yes,scrollbars=yes,location=no,menubar=no,toolbar=no,location=0,status=0');
	MyWnd.focus();
}