Cross browser screen lock orientation

screen.lockOrientation.js

var win             = window,
    lockOrientation = win.screen.lockOrientation || win.screen.mozLockOrientation || win.screen.msLockOrientation || function(){
        return null;
    }

if( lockOrientation ){
	/**
	 * Parameters
	 * [ portrait-primary, portrait-secondary, landscape-primary, landscape-secondary, portrait, landscape, default ]
	 */
	lockOrientation('portrait');
}