function setContactQueryString() {
    var queryString = '';
    var frm = document.getElementById('contact');
    var numberElements = frm.elements.length;
    for( var i = 0; i < numberElements; i++ ) {
        if( i < numberElements - 1 ) {
            queryString += frm.elements[i].name + '=' +
            encodeURIComponent(frm.elements[i].value) + '&';
        } else {
            queryString += frm.elements[i].name + '=' +
            encodeURIComponent(frm.elements[i].value);
        }
    }
    return queryString;
}

function submitContact() {
//    document.getElementById('contact_loading').style.display = 'block';
//    document.getElementById('contact_submit').style.display = 'none';
    var queryString = setContactQueryString();
    var url = 'http://www.ecarlist.com/contactsend.php';
    myContactRequest = initHttpRequest();
    httpRequest(myContactRequest,'POST',url,true,handleContactResponse,queryString);
}

function handleContactResponse() {
    if( myContactRequest.readyState == 4 ) {
        if( myContactRequest.status == 200 ) {
            var doc = myContactRequest.responseXML;
alert(myContactRequest);
            writeContactDocument(doc);
        } else {
            alert('A problem occurred with the XMLHttpRequest Object');
        }
    }
}

function writeContactDocument(doc) {
    var root = doc.documentElement;
    var retArray = new Array();
    var result;
    if( root.hasChildNodes() ) {
        var nodes = root.childNodes;
        for( var i = 0; i < nodes.length; i++ ) {
            retArray[i] = new Array();
            if( nodes[i].hasChildNodes() ) {
                var nodes2 = nodes[i].childNodes;
                for( var j = 0; j < nodes2.length; j++ ) {
                    retArray[i][j] = new Array();
                    retArray[i][j][0] = nodes2[j].nodeValue;
                    result = nodes2[j].nodeValue;
                }
            }
        }
    }

    if(result == 'success') {
	alert('success');
	try {
 	   	document.getElementById('contact_error').style.display = 'none';
        	document.getElementById('contact_loading').style.display = 'none';
		//remove form & replace with iframe
	} catch(e) {
		alert(e);
	}
    } else {
	try {
    		document.getElementById('contact_error').style.display = 'block';
        	document.getElementById('contact_loading').style.display = 'none';
        	document.getElementById('contact_submit').style.display = 'block';
	} catch(e) {
		alert(e);
	}
    }
}