var searchStr = "";
var callback = {
    success: function(o) {
        document.getElementById('mainWrapper').innerHTML = o.responseText;
    },
    failure: function(o) {
    }
}

function getUrl(url)
{
    YAHOO.util.Connect.setForm();
    
    if (url.indexOf('search=') != -1) {
        url = url + searchStr;
    }
    
    if (url.indexOf('?') != -1) {
        url = url + "&ajax=true";
    } else {
        url = url + "?ajax=true";
    }
    
    var request = YAHOO.util.Connect.asyncRequest('GET', url, callback, null);
}

function submitForm(url, form)
{
    YAHOO.util.Connect.setForm(form);
    var request = YAHOO.util.Connect.asyncRequest('POST', url, callback);
}