var mediaWindow;

function popWindow(mypage, myname, w, h, scroll) 
{
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	if(wint < 25)
	{
		wint = 0;
	}
	else
	{
		wint = wint - 25;
	}
	
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable'
	
	if(mediaWindow)
	{
		if(!mediaWindow.closed)
		{
			mediaWindow.close();
		}
	}
	mediaWindow = window.open(mypage, myname, winprops)
	if (parseInt(navigator.appVersion) >= 4) { mediaWindow.window.focus(); }
}

function popAudio(file)
{
	var url = "media.html?file="+file+"&width=300&height=0";
	return popWindow(url, "media",350, 100, 1);
}

function popVideo(file, width, height)
{
	var url = "media.html?file="+file+"&width="+width+"&height="+height;
	return popWindow(url, "media",width + 50, height + 100, 1);
}