var xmlHttp = null;
var global_search_words = "";
var global_suggestion = "";








// XMLHTTPRequest-Object instanzieren
function getSuggestion(search_words) {
	search_words = search_words.replace(/ü/, "unduuml");
	search_words = search_words.replace(/Ü/, "unduuml");
	search_words = search_words.replace(/ä/, "undauml");
	search_words = search_words.replace(/Ä/, "undauml");
	search_words = search_words.replace(/ö/, "undouml");
	search_words = search_words.replace(/Ö/, "undouml");
	search_words = search_words.replace(/ß/, "undszet");	
						

	if (search_words.length	< 3){
		document.getElementById('sug_output').style.visibility = "hidden"; 
	}

	if (search_words.length	>= 3){
		global_search_words = search_words;
		document.suchwort.sug_keywords.focus();
		if (window.ActiveXObject) {
			try {
				// für die neueren IE Browser
				xmlHttp= new ActiveXObject("Msxml2.XMLHTTP");
			} catch (e) {
				try {
				// für die älteren IE Browser
					xmlHttp= new ActiveXObject("Microsoft.XMLHTTP");
				} catch (e) {
				}
			}
		} else if (window.XMLHttpRequest) {
			try {
				// für alle anderen Browser
				xmlHttp= new XMLHttpRequest();
			} catch (e) {
			}
		}
	
		// falls AJAX unterstützt wird
		if (xmlHttp) {
		

		
			// Senden des Suchbegriffs an die PHP-Datei

		
			xmlHttp.open('GET', './suggest.php5?q=' + search_words , true);
			xmlHttp.onreadystatechange = doSuggest;
			xmlHttp.send(null);
		}
	}
}


var suggest_text = '';
var suggest_array = new Array();

function doSuggest() {
	var decoded = "";
	// readyState == 4 -> Kommunikation mit Server abgeschlossen
	if (xmlHttp.readyState == 4) {
		suggest_text = xmlHttp.responseText;
		global_suggestion = suggest_text;
		
//		suggest_text = decode_utf8( suggest_text );
		
		if (suggest_text != "") {
			decoded += "&nbsp;<i>Suchvorschläge:</i>";
			decoded += "<br><br>";
			decoded += suggest_text;
			decoded += "&nbsp;";			
			document.getElementById('sug_output').innerHTML = decoded;
		}
		if (decoded != "") {
			document.getElementById('sug_output').style.visibility = "visible";
		} else {
			document.getElementById('sug_output').style.visibility = "hidden";        
		}
	}
}



function hideSuggestion(){
	document.getElementById('sug_output').style.visibility = 'hidden';
}
function showSuggestion(SearchValue){
	if (SearchValue.length	>= 3 && global_suggestion != ""){
		document.getElementById('sug_output').style.visibility = 'visible';
	}
}