Passing a data into a webview

Hi,

I have a button that loads form.php into a webview. I'm trying to pass a variable into the webview so that maybe the 'title' of the previous window is displayed in the php form. Can anyone tell me if this is possible? I've included the code below for the button below. Thanks very much in advance!

button.addEventListener('click',function() {
            var win = Titanium.UI.createWindow({});
                var webview = Titanium.UI.createWebView({url:'http://www.domain.com/form.php'});
 
    var close_btn = Titanium.UI.createButton({
        title:'Close'
    });
    close_button.addEventListener('click', function() {
        win.close();
    });
    win.setLeftNavButton(close_button);
        win.add(webview);   
    win.open({modal:true});
});