function ChangeFormAction(str)
{
    var arr = new Array();
    arr[0] = 'web';
    arr[1] = 'comic';
    arr[2] = 'domain';

    for (i = 0; i < arr.length; i++) {
        if (arr[i] == str) {
            document.getElementById(arr[i] + '_txt').style.fontWeight = 'bold';
            document.getElementById(arr[i] + '_txt').style.color = '#333366';
        } else {
            document.getElementById(arr[i] + '_txt').style.fontWeight = 'normal';
            document.getElementById(arr[i] + '_txt').style.color = '#333366';
        }
    }

    if (str == 'image') {
        document.getElementById('act').name  = 'act';
        document.getElementById('act').value = 'image';
        document.getElementById('jwdSearchText').name = 'q';
        document.getElementById('jwdSearchForm').action = 'http://manboo.jword.jp/search';		
        document.getElementById('jwdSearchLogo').src = '/images/jwd_img/jwd_yst_logo.gif';		
    }else if (str == 'comic') {
        document.getElementById('act').name  = '';
        document.getElementById('act').value = '';
        document.getElementById('jwdSearchText').name = 'keyword';		
        document.getElementById('jwdSearchForm').action = 'http://manboo.co.jp/comic.html';		
        document.getElementById('jwdSearchLogo').src = '/images/jwd_img/spacer.gif';		
    }else if (str == 'domain') {
        document.getElementById('act').name  = 'domain';
        document.getElementById('act').value = 'manboo.co.jp';
        document.getElementById('jwdSearchText').name = 'q';
        document.getElementById('jwdSearchForm').action = 'http://manboo.jword.jp/search';		
        document.getElementById('jwdSearchLogo').src = '/images/jwd_img/jwd_yst_logo.gif';		
    } else {
        document.getElementById('act').name  = '';
        document.getElementById('act').value = '';
        document.getElementById('jwdSearchText').name = 'q';
        document.getElementById('jwdSearchForm').action = 'http://manboo.jword.jp/search';		
        document.getElementById('jwdSearchLogo').src = '/images/jwd_img/jwd_yst_logo.gif';	
    }
}