function trim (zeichenkette) {
  return zeichenkette.replace (/^\s+/, '').replace (/\s+$/, '');
}

//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';
}

function setKeywords() {
  var str1 = trim(document.getElementById('key_1').value);
  var str2 = trim(document.getElementById('key_2').value);
  var str3 = trim(document.getElementById('key_3').value);
  var str4 = trim(document.getElementById('key_4').value);
  if (str1.indexOf(" ")>0) { str1 = '\"' + str1 + '\"'; }
  if (str2.indexOf(" ")>0) { str2 = '\"' + str2 + '\"'; }
  if (str3.indexOf(" ")>0) { str3 = '\"' + str3 + '\"'; }
  if (str4.indexOf(" ")>0) { str4 = '\"' + str4 + '\"'; }
//fkt im IE nicht:  document.getElementById('keywords').value = str1 + ' ' + str2 + ' ' + str3 + ' ' + str4;
  document.advanced_search.keywords.value = str1 + ' ' + str2 + ' ' + str3 + ' ' + str4;
}

function getXmlHttpRequestObject() {
	if (window.XMLHttpRequest) {
		return new XMLHttpRequest();
	} else if(window.ActiveXObject) {
		return new ActiveXObject("Microsoft.XMLHTTP");
	} else {
		alert("Your Browser Sucks!\nIt's about time to upgrade don't you think?");
	}
}

var searchReq = getXmlHttpRequestObject();


//Key 1

function searchSuggest_1() {
	if (searchReq.readyState == 4 || searchReq.readyState == 0) {
		var str = escape(document.getElementById('key_1').value);
		searchReq.open("GET", 'ajax_search_suggest.php?search=' + str, true);
		searchReq.onreadystatechange = handlesearchSuggest_1;
		searchReq.send(null);
	}		
}

function handlesearchSuggest_1() {
	if (searchReq.readyState == 4) {
		var ss = document.getElementById('search_suggest_1')
		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_1(this.innerHTML);" ';
			suggest += 'class="suggest_link">' + str[i] + '</div>';
			ss.innerHTML += suggest;
		}
	}
}

//Click function
function setSearch_1(value) {
	pos = value.search(/Treffer:/) - 1;
  value = value.substring(0,pos);
  document.getElementById('key_1').value = value;
	document.getElementById('search_suggest_1').innerHTML = '';
	setKeywords();
}


//Key 2
function searchSuggest_2() {
	if (searchReq.readyState == 4 || searchReq.readyState == 0) {
		var str = escape(document.getElementById('key_2').value);
		searchReq.open("GET", 'ajax_search_suggest.php?search=' + str, true);
		searchReq.onreadystatechange = handlesearchSuggest_2;
		searchReq.send(null);
	}
}

function handlesearchSuggest_2() {
	if (searchReq.readyState == 4) {
		var ss = document.getElementById('search_suggest_2')
		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_2(this.innerHTML);" ';
			suggest += 'class="suggest_link">' + str[i] + '</div>';
			ss.innerHTML += suggest;
		}
	}
}

//Click function
function setSearch_2(value) {
	pos = value.search(/Treffer:/) - 1;
  value = value.substring(0,pos);
  document.getElementById('key_2').value = value;
	document.getElementById('search_suggest_2').innerHTML = '';
	setKeywords();
}

//Key 3
function searchSuggest_3() {
	if (searchReq.readyState == 4 || searchReq.readyState == 0) {
		var str = escape(document.getElementById('key_3').value);
		searchReq.open("GET", 'ajax_search_suggest.php?search=' + str, true);
		searchReq.onreadystatechange = handlesearchSuggest_3;
		searchReq.send(null);
	}
}

function handlesearchSuggest_3() {
	if (searchReq.readyState == 4) {
		var ss = document.getElementById('search_suggest_3')
		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_3(this.innerHTML);" ';
			suggest += 'class="suggest_link">' + str[i] + '</div>';
			ss.innerHTML += suggest;
		}
	}
}

//Click function
function setSearch_3(value) {
	pos = value.search(/Treffer:/) - 1;
  value = value.substring(0,pos);
  document.getElementById('key_3').value = value;
	document.getElementById('search_suggest_3').innerHTML = '';
	setKeywords();
}


//Key 4
function searchSuggest_4() {
	if (searchReq.readyState == 4 || searchReq.readyState == 0) {
		var str = escape(document.getElementById('key_4').value);
		searchReq.open("GET", 'ajax_search_suggest.php?search=' + str, true);
		searchReq.onreadystatechange = handlesearchSuggest_4;
		searchReq.send(null);
	}
}

function handlesearchSuggest_4() {
	if (searchReq.readyState == 4) {
		var ss = document.getElementById('search_suggest_4')
		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_4(this.innerHTML);" ';
			suggest += 'class="suggest_link">' + str[i] + '</div>';
			ss.innerHTML += suggest;
		}
	}
}

//Click function
function setSearch_4(value) {
	pos = value.search(/Treffer:/) - 1;
  value = value.substring(0,pos);
  document.getElementById('key_4').value = value;
	document.getElementById('search_suggest_4').innerHTML = '';
	setKeywords();
}