function FFSuggest() {
	
	var pRequest;
	var pLayer;
	var pDebug					= false;
	var pInstanceName			= "";
	var pSearchURL				= "";
	var pQueryParamName			= "";
	var pFormname 				= "";
	var pLayerName				= ""
	var pQueryInput;
	var pSuggest;
	var pLastQuery;
	var pCurrentSelection		= 0;
	var pCellSpacing			= 0;
	var pHighlightBgColor 		= "#ebf7f9";
	var pHighlightTextColor 	= "#FFFFFF";	
	var pStandardBgColor 		= "#FFFFFF";
	var pStandardTextColor 		= "#000000";
	var timestamp = 0;
	
	this.init = function(searchURL, formname, queryParamName, divLayername, instanceName, debugMode) {
		pSearchURL		= searchURL;
		pFormname		= formname;
		pQueryParamName	= queryParamName;
		pLayerName		= divLayername;
		pInstanceName	= instanceName;
		pDebug			= debugMode;
		if (pSearchURL == "") {		
			if (pDebug) alert("no searchurl defined");
			return null;
		} else if (pInstanceName == "") {
			if (pDebug) alert("no instancename defined");
			return null;
		} else if (pFormname == "") {
			if (pDebug) alert("no formname defined");
			return null;
		} else if (pQueryParamName == "") {
			if (pDebug) alert("no queryparamname defined");
			return null;
		} else if (pLayerName == "") {
			if (pDebug) alert("need a layer for output");
		}
		pQueryInput = document[pFormname][pQueryParamName];
		pQueryInput.onkeyup	= handleKeyUp;
		pQueryInput.onfocus	= function ()
		{
			if (pQueryInput.value == 'Begriff/Art.Nr.') pQueryInput.value = '';
			showLayer();
		}
		pQueryInput.onblur	= hideLayer;
		document[pFormname].onsubmit = handleSubmit;
	}
	
	String.prototype.basicTrim = function () {
    return (this.replace(/\s+$/,"").replace(/^\s+/,""));
  };
	
	this.setHighlightColors = function(highlighBackgroundColor, highlighTextColor) {
		pHighlightBgColor	= highlighBackgroundColor;
		pHighlightTextColor	= highlighTextColor;
	}
	
	this.setStandardColors = function(standardBackgroundColor, standardTextColor) {
		pStandardBgColor	= standardBackgroundColor;
		pStandardTextColor	= standardTextColor;
	}
	
	this.setCellspacing = function(cellspacing) {
		pCellSpacing = cellspacing;
	}
	
	function handleSubmit() {
		if (pSuggest[pCurrentSelection] != undefined) {
			if (pSuggest[pCurrentSelection].split('###')[1] == "Kategorie") {
				document[pFormname]["filterkategorie"].value = "__" + pSuggest[pCurrentSelection].split('###')[0] + "__";
				document[pFormname][pQueryParamName].value = pSuggest[pCurrentSelection].split('###')[0];
			}
			else {
				document[pFormname][pQueryParamName].value = pSuggest[pCurrentSelection].split('###')[0];
			}
		}
	}
	
	this.handleClick = function() {
		if (pSuggest[pCurrentSelection] != undefined) {
			if (pSuggest[pCurrentSelection].split('###')[1] == "Kategorie") {
				document[pFormname]["filterkategorie"].value = "__" + pSuggest[pCurrentSelection].split('###')[0] + "__";
				document[pFormname][pQueryParamName].value = pSuggest[pCurrentSelection].split('###')[0];
				document[pFormname].submit();
			}
			else {
				document[pFormname][pQueryParamName].value = pSuggest[pCurrentSelection].split('###')[0];
				document[pFormname].submit();
			}
		}
	}
	
	this.handleMouseOver = function(pos) {
		var tblCell = getTableCell(pos);
		unmarkAll();
		if (tblCell != null) {
			highlightSuggest(tblCell);
			pCurrentSelection = pos;
		}
	}
	
	this.handleMouseOut = function(pos) {
		var tblCell = getTableCell(pos);
		if (tblCell != null) {
			unmarkSuggest(tblCell);
			pCurrentSelection = -1
		}
	}
	
	function handleKeyUp(evt) {
		
		evt = (evt) ? evt : ((event) ? event : null);
		if (evt.timeStamp - timestamp < 10) {
			return;
		}
		else {
			timestamp = evt.timeStamp;
		}

		var keyCode = evt.keyCode;
		if (keyCode == 38) {
			moveSelection("up")
		} else if (keyCode == 40) {
			moveSelection("down");
		} else {
			if (pQueryInput.value == "") {
				hideLayer();
				if (pLayer != null) pLayer.innerHTML = "";
				return null;
			}
			if (pLastQuery != pQueryInput.value) startAjax();
			pLastQuery = pQueryInput.value;
		}
	}

	function moveSelection(direction) {
		var pos = pCurrentSelection;
		if (direction == "up")	pos--;
		else 					pos += 1;
		
		if (pos < 0) {
			unmarkAll();
			pQueryInput.focus();
			pCurrentSelection	= -1;
		} else {
			var tblCell = getTableCell(pos);
			if (tblCell != null) {
				unmarkAll();
				highlightSuggest(tblCell);
				pCurrentSelection = pos;
			}
		}
		
		var query = pQueryInput.value;
		pQueryInput.value = "";
		pQueryInput.focus();
		pQueryInput.value = query; 
	}
	
	function startAjax() {
		var query = pQueryInput.value;
		var requestURL = pSearchURL + "?" + pQueryParamName + "=" + query + "&ajax=1";
		try {
			if( window.XMLHttpRequest ) {
				pRequest = new XMLHttpRequest();
			} else if( window.ActiveXObject ) {
				pRequest = new ActiveXObject( "Microsoft.XMLHTTP" );
			} else {
				if (pDebug) alert( "" );
			}
			
			pLayer = document.getElementById(pLayerName);
			if (pLayer != null) {
				if (query != "") {
					pRequest.open( "GET", requestURL, true );
					pRequest.onreadystatechange = callbackAjax;
					pRequest.send( null );
				} else {
					hideLayer();
				}
			} else {
				if (pDebug) alert( "no layer for output found" );
			}
		} catch( ex ) {
			hideLayer();
			if (ex == undefined) {
				if (pDebug) alert( "Error: " + ex.getmessage );
			} else {
				if (pDebug) alert( "Error: " + ex );
			}
		}
	}
	
	function hideLayer() {
		if (pLayer != null) {
			pLayer.style.display = "none";
		}
	}
	
	this.hideLayerOutsideCall = function() {
		if (pLayer != null) {
			pLayer.style.display = "none";
		}
	}
	
	function showLayer() {
		if (pLayer != null && pSuggest.length >= 1) {
			pLayer.style.display	= "block";
		}
	}
	
	function callbackAjax() {
		if (pRequest.readyState == 4) {
			if (pRequest.status != 200) {
				hideLayer();
				if (pDebug) alert( "Error (" + pRequest.status + "): " + pRequest.statusText );
			} else {
				handleResponse(pRequest.responseText);
			}
		}
    }
	
	function handleResponse(text) {
		pCurrentSelection = -1;
		pSuggest = new Array();
		pSuggest = text.split("\n");
		var outputText = '<div class="suggestLayerContent"><table cellpadding="' + pCellSpacing + '" cellspacing="0" class="' + pLayerName + '" border="0" onMouseDown="' + pInstanceName + '.handleClick();">';
		var pNewSuggest = new Array();
		for (var i in pSuggest) {
			var firstChar = pSuggest[i].charCodeAt(0);
			if (firstChar != 13 && firstChar != 10 && pSuggest[i].length >= 1) {
				pNewSuggest.push(pSuggest[i]);
			}
		}
		pSuggest = pNewSuggest;
		for (var i in pSuggest) {
			pSuggestParts = new Array();
			pSuggestParts = pSuggest[i].split("###");

			outputText += '<tr><td nowrap="nowrap" id="' + pLayerName + '_' + i + '" class="ffsuggest-row" style="padding: 3px 2px 3px 6px;" onMouseOver="' + pInstanceName + '.handleMouseOver(' + i + ');" onMouseOut="' + pInstanceName + '.handleMouseOut(' + i + ');">' + pSuggestParts[0] + '</td><td nowrap="nowrap" id="' + pLayerName + '_' + i + '_2" class="ffsuggest-row" style="padding: 3px 2px 3px 6px;color:#999999" width="30%">' + pSuggestParts[2] + '</td></tr>';				
		}
		outputText += '</td><tr></table></div>';
		//alert(outputText)
		if (pSuggest.length >= 1) {
			showLayer();
			pLayer.innerHTML		= outputText;
		} else {
			hideLayer();
			pLayer.innerHTML		= "";
		}
	}
	
	function highlightSuggest(tblCell) {
		/*tblCell.style.backgroundColor	= pHighlightBgColor;
		tblCell.style.color				= pHighlightTextColor;*/
		tblCell.className = 'ffsuggest-row-over';
	}
	
	function unmarkSuggest(tblCell) {
		/*tblCell.style.backgroundColor	= pStandardBgColor;
		tblCell.style.color				= pStandardTextColor;*/
		tblCell.className = 'ffsuggest-row';
	}
	
	function unmarkAll() {
		var tblCell;
		for (var i in pSuggest) {
			tblCell = getTableCell(i);
			if (tblCell != null) {
				unmarkSuggest(tblCell);
			}
		}
	}
	
	function getTableCell(pos) {
		var tblCell;
		tblCell = document.getElementById(pLayerName + "_" + pos);
		return tblCell;
	}	
}