evalJS not working with passing variables

I am using evalJS to attempt to call a function in a webview and pass a parameter to that function. It will work perfectly if I pass a string but if I try to pass a variable nothing happens.

var calendarView = Ti.UI.createWebView();
    calendarView.url = '../views/calendar_list_view.html';

calendarView.evalJS(scrollDate('03/03/2011'));

var date = "03/03/2011";
calendarView.evalJS(scrollDate(date));

function scrollDate(date) {
        document.getElementById(date).scrollIntoView();
    }