//Gets the browser specific XmlHttpRequest Object
function getXmlHttpRequestObject() {
    if (window.XMLHttpRequest) {
        return new XMLHttpRequest();
    } else if(window.ActiveXObject) {
        return new ActiveXObject("Microsoft.XMLHTTP");
    } else {
        alert("Your browser is missing AJAX support. Please consider upgrading your browser...");
    }
}

//Our XmlHttpRequest object to get the auto suggest
var searchReq = getXmlHttpRequestObject();

//Called from keyup on the search textbox.
//Starts the AJAX request.
function searchSuggest() {
    if (searchReq.readyState == 4 || searchReq.readyState == 0) {
        var str = escape(document.getElementById('txtSearch').value);
        searchReq.open("GET", '/citysuggest/' + escape(str), true);
        searchReq.onreadystatechange = handleSearchSuggest; 
        searchReq.send(null);
  }
}
//Called when the AJAX response is returned.
function handleSearchSuggest() {
    if (searchReq.readyState == 4) {
        var ss = document.getElementById('search_suggest')
        ss.innerHTML = '';
        var str = searchReq.responseText.split("\n");
        for(i=0; i < str.length - 1; i++) {
            //Build our element string.  This is cleaner using the DOM, but
            //IE doesn't support dynamically added attributes.
            var suggest = '<div onmouseover="javascript:suggestOver(this);" ';
            suggest += 'onmouseout="javascript:suggestOut(this);" ';
            suggest += 'onclick="javascript:setSearch(this.innerHTML);" ';
            suggest += 'class="suggest_link">' + str[i] + '</div>';
            ss.innerHTML += suggest;
        }
	if (str.length > 1) {
		ss.style.border='1px solid black';
	}
    }
}

//Click function
function setSearch(value) {
    document.getElementById('txtSearch').value = value;
    ss = document.getElementById('search_suggest');
    ss.innerHTML = '';
    ss.style.border='0';
}

//Mouse over function
function suggestOver(div_value) {
    div_value.className = 'suggest_link_over';
}
 
//Mouse out function
function suggestOut(div_value) {
    div_value.className = 'suggest_link';
}