//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("aggiorna il 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('nc').value);
		searchReq.open("GET", 'ajax-elenco-citta.php?nc=' + 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('suggerimenti_ricerca')
		ss.innerHTML = '';
		var str = searchReq.responseText.split("///");
		for(i=0; i < str.length - 1; i++) {
			step++;
			var suggest = '<div onmouseover="javascript:suggestOver(this);" ';
			suggest += 'onmouseout="javascript:suggestOut(this);" ';
			suggest += 'onclick="javascript:setSearch(this.innerHTML);" ';
			suggest += 'class="testo_citta_risultato">' + str[i] + '</div>';
			ss.style.display = "block";
			ss.style.border = "1px solid #3366cc";
			ss.innerHTML += suggest;
		}
	}
}

function trim(stringa){
    while (stringa.substring(0,1) == ' '){
        stringa = stringa.substring(1, stringa.length);
    }
    while (stringa.substring(stringa.length-1, stringa.length) == ' '){
        stringa = stringa.substring(0,stringa.length-1);
    }
    return stringa;
}

//Mouse over function
function suggestOver(div_value) {
	div_value.className = 'testo_citta_risultato_over';
}
//Mouse out function
function suggestOut(div_value) {
	div_value.className = 'testo_citta_risultato';
}
//Click function
function setSearch(value) {
	var sottostringa = value.split(" ");
	var lunghezza = (sottostringa.length)-2;
	var stringa_finale = "";
	for(i = 0; i < lunghezza; i++){
	stringa_finale = stringa_finale + sottostringa[i] + " ";
	}
	stringa_finale = trim(stringa_finale);
	document.getElementById('nc').value = stringa_finale;
	document.getElementById('suggerimenti_ricerca').innerHTML = '';
	document.getElementById('suggerimenti_ricerca').style.border = "0px solid #3366cc";
	document.getElementById('suggerimenti_ricerca').style.display = "none";
}