function opennewwindow(URLtoOpen, windowName, windowFeatures){
	var r = Math.round(Math.random()*1000);
	//alert(windowName);
	//windowName.close();
	//var windowName = "fullscreenwindow_"+r.toString();
	var windowName = "sample";
	newWindow=window.open(URLtoOpen, windowName, windowFeatures);
	newWindow.document.title=windowName;
	newWindow.focus();
}
function opennewfullscreenwindow(URLtoOpen, windowName){
	var windowName = "fullscreenwindow";
	newWindow=window.open(URLtoOpen, windowName, 'width='+screen.width+',height='+screen.height+',toolbar=yes,menubar=yes,scrollbars=yes,resizable=yes, fullscreen=yes, channelmode=no');
	newWindow.focus()
}