function doSuggest(keywords,key){
     var href = "search-key.htm?title=" + keywords;
	  dojo.io.bind({
			url:href,
			load: function(type,data,evt){
				suggest(data,keywords,key);
			},
			timeoutSeconds: 5000,
			error: function(type, error) { alert(error.message); },
    		timeout: function(type) { alert("timeout"); },
		    preventCache: true,
			mimetype:"text/plain"
		});
}

var maxResults = 10;	// max # of results to display控制最大显示数
var ignoreKeys = "";
function suggest(data,keywords,key){
    var terms = data.split("\n")
	var results = document.getElementById("results");
	if(keywords != "")	{
		var ul = document.createElement("ul");
		var li;
		var a;
		if ((key == '40' || key == '38' || key == '13')){
			navigate(key);
		}else{
			var kIndex = -1;
			for(var i = 0; i < terms.length-1; i++){
				kIndex = terms[i].toLowerCase().indexOf(keywords.toLowerCase());
				if(kIndex >= 0){
					li = document.createElement("li");
					// setup the link to populate the search box
					a = document.createElement("a");
					a.href = "javascript://"; 
					a.setAttribute("rel",terms[i]);
					a.setAttribute("rev", getRank(terms[i].toLowerCase(), keywords.toLowerCase()));
					if(!document.all) a.setAttribute("onclick","populate(this);");
					else a.onclick = function() { populate(this); }
					a.appendChild(document.createTextNode(""));
					if(keywords.length == 1){
						var kws = terms[i].toLowerCase().split(" ");
						var firstWord = 0;
						for(var j = 0; j < kws.length; j++){
						 //	if(kws[j].toLowerCase().charAt(0) == keywords.toLowerCase()) {
								ul.appendChild(li);
								if(j != 0) {
									kIndex = terms[i].toLowerCase().indexOf(" " + keywords.toLowerCase());
									kIndex++;
								}
								break;
						//	}
						}
					}
					else if(keywords.length > 1) {
						ul.appendChild(li);
					}
					else continue;
					var before = terms[i].substring(0,kIndex);
					var after = terms[i].substring(keywords.length + kIndex, terms[i].length);
					a.innerHTML = before + "<strong>" + keywords.toLowerCase() + "</strong>" + after;
					li.appendChild(a);
				}
			}
			if(results.hasChildNodes()) results.removeChild(results.firstChild);
			// position the list of suggestions
			var s = document.getElementById("txtSearch");
			var xy = findPos(s);
			results.style.left = xy[0]-87 + "px";
			results.style.top = xy[1] + s.offsetHeight + "px";
			//results.style.width = s.offsetWidth + "px";
			// if there are some results, show them
			if(ul.hasChildNodes()) {
				results.appendChild(filterResults(ul));
				if(results.firstChild.childNodes.length == 1) results.firstChild.firstChild.getElementsByTagName("a")[0].className = "hover";
				
			}
		}
	}else{
		if(results.hasChildNodes()) results.removeChild(results.firstChild);
	}
}

/***********************************************
 * Rank results - used for sorting result sets
 * 0 if entire row starts with kw
 * 0 < i < 1 if any word in row starts with kw (1k char max)
 * i > 1 if row contains kw anywhere else
 ***********************************************/
function getRank(activity, keywords){
	var ret = -1;
	var kIndex = activity.indexOf(keywords);
	ret = (activity.charAt(kIndex - 1) == " ") ? kIndex : (200*kIndex);
	return ret;
}

/***********************************************
 * Sort the result suggestion sets
 ***********************************************/
function filterResults(s){
	var sorted = new Array();
	for(var i = 0; i < s.childNodes.length; i++){
		sorted.push(s.childNodes[i]);
	}
	var ul = document.createElement("ul");
	var lis = sorted.sort(sortIndex);
	for(var j = 0; j < lis.length; j++){
		if(j < maxResults) ul.appendChild(lis[j]);
		else break;
	}
	return ul;
}

function sortIndex(a,b){
	// wow thats ugly -- need logic around grouped items getting out of order
	return (a.getElementsByTagName("a")[0].rev - b.getElementsByTagName("a")[0].rev);
}
/***********************************************
 * Navigate using up/down and submit with 'Enter'
 ***********************************************/
function navigate(key){
	var results = document.getElementById("results");
	var keyIndex = document.getElementById("keyIndex");
	var i = keyIndex.value;
	if(i == "" || !i) i = -1;
	else i = parseFloat(i);
	var ul = results.childNodes[0];
	if(ul){
		if(key == '40'){
			i++;
			if(i > ul.childNodes.length-1) i = ul.childNodes.length-1;
			keyIndex.value = i;
			try {
				ul.childNodes[i].getElementsByTagName("a")[0].className = "hover";
				ul.childNodes[i-1].getElementsByTagName("a")[0].className = "";
			}
			catch(e) {}
		}
		else if(key == '38'){
			i--;
			if(i <= 0) i = 0;
			keyIndex.value = i;
			try {
				ul.childNodes[i].getElementsByTagName("a")[0].className = "hover";
				ul.childNodes[i+1].getElementsByTagName("a")[0].className = "";
			}
			catch(e) {}
		}
		else if(key == '13' || key == '9'){
			if(i == -1) i = 0;
			populate(ul.childNodes[i].getElementsByTagName("a")[0]);
		}
		else return;	
	}
}
/***********************************************
 * Allow for using tab onkeydown
 ***********************************************/
function tabfix(keywords, key){
	if(key == '9') {
		navigate(key);
		return false;
	}
	else return true;
}
/***********************************************
 * Populate hidden fields via onclick on 'Enter'
 ***********************************************/
function populate(a){
	var ul = document.getElementById("results").childNodes[0];
	try {
		var pick = a.innerHTML.replace("<strong>","").replace("</strong>","");
		// IE6 converts HTML elements to uppercase -- could be done with RegExp
		if(document.all) pick = a.innerHTML.replace("<STRONG>","").replace("</STRONG>","");
		document.getElementById("txtSearch").value = pick;
		document.getElementById('searchForm').submit();
		//document.forms["searchForm"].submit();
	}
	catch(e) {}
	clearSuggest();
	
}
/***********************************************
 * Find an elements position on the screen
 ***********************************************/
function findPos(obj) {
	var curleft = curtop = 0;
	if (obj.offsetParent) {
		curleft = obj.offsetLeft
		curtop = obj.offsetTop
		while (obj = obj.offsetParent) {
			curleft += obj.offsetLeft
			curtop += obj.offsetTop
		}
	}
	return [curleft,curtop];
}
/***********************************************
 * Helper to preserve onclick on suggestions
 ***********************************************/
function clearSuggest(){
	// need a timeout so the onclick event is captured before results are hidden
	setTimeout("hideSuggest()",200);  //time set选择时间设置
}
/***********************************************
 * Hide the suggestions list and remove from DOM
 ***********************************************/
function hideSuggest(){
	var results = document.getElementById("results");
	if(results.hasChildNodes()) results.removeChild(results.firstChild);
	document.getElementById("keyIndex").value = "-1"; // reset the suggestions index
}