function open_picture_in_window(picture, alt, width_f, height_f)
{
	var win = new Window({
				className: "dialog",
				width: width_f,
				height: height_f,
				zIndex: 100,
				resizable: true,
				title: alt,
				showEffect:Effect.BlindDown,
				hideEffect: Effect.SwitchOff,
				draggable:false,
				wiredDrag: false,
				minimizable: false,
				maximizable: false,
				resizable: false
				});
	win.getContent().innerHTML= "<img src='" + picture + "' alt='" + alt + "' align='centre' />";
	win.showCenter();
} 

function change_menu_picture(id)
{
	pic= $("meni_picture");
	pic.src="images/m_" + id + ".png"
}