JQuery Mobile Panel as Menu

JQuery Mobile Panel as Menu

I am using some code I found using a panel for a menu.  The nice thing is when using a mobile device (i.e. iPhone or iPad), if appears as a small icon or image at the top that can be touched and the menu drops down.  I really like the look and feel of this, but when I go to a larger device or laptop with larger screens, the menu is fully opened and takes up a large portion of the screen.  Was wanting to see about how to make it so that the panel menu is always collapsed.  I'm using code that is called jqm-navmenu-panel.