jQuery.myWindow = {
    loc : 
    function(urlstr, args) {
        args = 
            jQuery.extend({
                win : window,
                w : 600,
                h : 600,
                target : '_top'
            },
            args);
            
        if (!args.t) {
            args.t = screen.height / 2 - args.h / 2;
        }
        if (!args.l) {
            args.l = screen.width / 2 - args.w / 2;
        }
        if (args['target'] == '_top') {
            args.win.location.href = urlstr;
        }
        else {            
            open(
            urlstr,
            args['target'],
            'width=' + args.w + ',height=' + args.h + ',top=' + args.t + ',left=' + args.l + ',scrollbars,resizable'
            );
        
        }
        return;
    }    
    
};