function TopObjects(sVisibility) {
	oSelects = document.getElementsByTagName('SELECT');
	if (oSelects.length > 0) {
		for (i = 0; i < oSelects.length; i++) {
			oSelects[i].style.visibility = sVisibility;
		}
	}

	oObjects = document.getElementsByTagName('OBJECT');
	if (oObjects.length > 0) {
		for (i = 0; i < oObjects.length; i++) {
			oObjects[i].style.visibility = sVisibility;
		}
	}
}

// Popup window
function popupWindow( Name, width, height) {
	style = "height=" + height + ",width=" + width + ", top=" + ((screen.height/2)-(height/2)) + ", left=" + ((screen.width/2)-(width/2)) + ", status=yes, toolbar=no, menubar=no, location=no, scrollbars=yes, resizable=yes";
	open( Name, 'Popup', style );
}

window.onload = function() {
    
    // Set random backgroundimage
    var aantalBG = 6;
    var randomnumberBG = Math.floor(Math.random() * aantalBG) + 1;
    document.getElementsByTagName('body')[0].className = "bgImg" + randomnumberBG;

    // Set random logo
    var aantalLogo = 3;
    var randomnumberLogo = Math.floor(Math.random() * aantalLogo) + 1;
    document.getElementById('divLogo').className = "logo" + randomnumberLogo;
    
}