var sections = new Array('multiForm_p1', 'multiForm_p2', 'multiForm_p3');
function init() {
    show('multiForm_p1');
    document.forms['submitevent'].elements['cost'].focus();
}
function show(section) {
    for (var i = 0; i < sections.length; i++) {
        if (sections[i] == section) {
            document.getElementById(sections[i]).style.display = 'block';
        } else {
            document.getElementById(sections[i]).style.display = 'none';
        }
    }
}