function showOh() {

	var cp = new Ext.state.CookieProvider({
		path: "/",
		expires: new Date(new Date().getTime()+(1000*60*60*24*30)) //30 days
	});
	Ext.state.Manager.setProvider(cp);

	if (cp.get('showOh')) {
		return;
	}
	
	var closeButton = new Ext.Button({
    	text: 'Click Here to Continue'
    });
    
    closeButton.on('click',function() {
    	win.close();
    });
     
    var cbox = new Ext.form.Checkbox({
        		boxLabel: "Don't show this again"
        	});
    cbox.on('check',function(box,checked) {
    	cp.set('showOh',checked);
    });
    var win = new Ext.Window({ 
        title: 'MHA Open House',
        layout: 'fit', 
        height: 490,
        width: 430,  
        modal: true,
        buttons: [
			cbox,
			{ text: 'Click HERE to continue',
			handler: function(){
			win.hide();}
			}]
    }); 
    
    win.html = '<img width="100%" height="100%" src="OH-mini.PNG">';
    win.show(); 
}