/*
	 *	jquery.suggest 1.3 - 2009-04-24
	 *	
	 *  Original Script by Peter Vulgaris (www.vulgarisoip.com)
	 *  Updates by Chris Schuld (http://chrisschuld.com/)
	 *  Updates by KGO Hayashi (www.qzc.co.jp)
	 *
	 */
	
	(function($) {
		$.suggest = function(input, options) {
	
			var $input = $(input).attr("autocomplete", "off");
			var $results;		// list
			var $resultsBox;	// wrapping div

			var timeout = false;		// hold timeout ID for suggestion results to appear	
			var prevLength = 0;			// last recorded length of $input.val()
			var prevStr = $input.val();
			var cache = [];				// cache MRU list
			var cacheSize = 0;			// size of cache in chars (bytes?)

			if( ! options.attachObject ){
				options.attachObject = $(document.createElement("div")).appendTo('body');
			}

			$resultsBox = options.attachObject;
			options.attachListObject = $(document.createElement("ul")).appendTo(options.attachObject);
			$results = $(options.attachListObject);
			$results.addClass(options.resultsClass);
			$resultsBox.addClass(options.resultsBoxClass);
			
			resetPosition();
			$(window)
				.load(resetPosition)		// just in case user is changing size of page while loading
				.resize(resetPosition);

			$input.blur(function() {
				setTimeout(function() { $resultsBox.hide() }, 200);
			});
			
			
			// help IE users if possible
			try {
				$resultsBox.bgiframe();
			} catch(e) { }


			// I really hate browser detection, but I don't see any other way
			if ($.browser.mozilla)
				$input.keypress(processKey);	// onkeypress repeats arrow keys in Mozilla/Opera
			else
				$input.keydown(processKey);		// onkeydown repeats arrow keys in IE/Safari
			
			setSuggestTimer(0);


			function resetPosition() {
				// requires jquery.dimension plugin
				var offset = $input.offset();
				var width;
				var css = {
					top: (offset.top + input.offsetHeight) + 'px',
					left: offset.left + 'px'
				};
				
				if(options["top"])
					css["top"] = (offset.top + input.offsetHeight + options["top"]) + 'px';
				if(options["left"])
					css["left"] = (offset.left + options["left"]) + 'px';
				if(options["width"])
					width = options["width"];
				else if(options["autowidth"])
					width = $input.css("width").replace(/^(\d+)px/,'$1');
				
				if(options["width_adjust"] && width)
					width = parseInt(width) + options["width_adjust"];
				if(width)
					css["width"] = width + 'px';
				
				$resultsBox.css(css);
			}
			
			function setSuggestTimer(delay){
				var d = options.delay;
				if(delay != null)
					d = delay;
				if (timeout) 
					clearTimeout(timeout);
				timeout = setTimeout(suggest, d);
			}
			
			function processKey(e) {
				
				// handling up/down/escape requires results to be visible
				// handling enter/tab requires that AND a result to be selected
				if ((/27$|38$|40$/.test(e.keyCode) && $resultsBox.is(':visible')) ||
					(/^13$|^9$/.test(e.keyCode) && getCurrentResult())) {
		            
		            if (e.preventDefault)
		                e.preventDefault();
					if (e.stopPropagation)
		                e.stopPropagation();

	                e.cancelBubble = true;
	                e.returnValue = false;
				
					switch(e.keyCode) {
	
						case 38: // up
							prevResult();
							break;
				
						case 40: // down
							nextResult();
							break;
	
						case 9:  // tab
						case 13: // return
							selectCurrentResult();
							break;
							
						case 27: //	escape
							$resultsBox.hide();
							break;
	
					}
					
				}
				else if ( /^40$/.test(e.keyCode) && !$resultsBox.is(':visible') ) {
		            
					switch(e.keyCode) {
	
						case 40: // down
							prevStr = "";
							break;
	
					}
					
				}
				else{
					setSuggestTimer(0);
				}
				//else if ($input.val().length != prevLength) {
				//	if (timeout) 
				//		clearTimeout(timeout);
				//	timeout = setTimeout(suggest, options.delay);
				//	prevLength = $input.val().length;
				//
				//}			
					
			}
			
			
			function suggest() {
				var q = $.trim($input.val());
				if (q == prevStr) {
					;
				}
				else if (q.length >= options.minchars) {
					
					cached = checkCache(q);
					
					if (cached) {
					
						displayItems(cached['items']);
						
					} else {
					
						$.get(options.source, {q: q}, function(txt) {

							$resultsBox.hide();
							
							var items = parseTxt(txt, q);
							
							displayItems(items);
							addToCache(q, items, txt.length);
							
						}, options.datatype);
						
					}
					
					
				} else {
				
					$resultsBox.hide();
					
				}
				prevStr = q;
				
				setSuggestTimer();
			}
			
			
			function checkCache(q) {

				for (var i = 0; i < cache.length; i++)
					if (cache[i]['q'] == q) {
						cache.unshift(cache.splice(i, 1)[0]);
						return cache[0];
					}
				
				return false;
			
			}
			
			function addToCache(q, items, size) {

				while (cache.length && (cacheSize + size > options.maxCacheSize)) {
					var cached = cache.pop();
					cacheSize -= cached['size'];
				}
				
				cache.push({
					q: q,
					size: size,
					items: items
					});
					
				cacheSize += size;
			
			}
			
			function displayItems(items) {
				
				if (!items)
					return;
					
				if (!items.length || (items.length == 1 && items[0]['token'] == $input.val()) ) {
					$resultsBox.hide();
					return;
				}
				
				var html = '';
				for (var i = 0; i < items.length; i++)
					html += '<li' + (items[i]['key'] != '' ? ' id="s_'+ items[i]['key']+'"' : '' ) + '>' + items[i]['value'] + '</li>';
				$results.html(html);
				$resultsBox.show();
				
				$results
					.children('li')
					.mouseover(function() {
						$results.children('li').removeClass(options.selectClass);
						$(this).addClass(options.selectClass);
					})
					.click(function(e) {
						e.preventDefault(); 
						e.stopPropagation();
						selectCurrentResult();
					});
							
			}
			
			function parseTxt(txt, q) {
				
				var items = [];
				var tokens = txt.split(options.delimiter);
				
				// parse returned data for non-empty items
				for (var i = 0; i < tokens.length; i++) {
					var data = $.trim(tokens[i]).split(options.dataDelimiter);
					if( data.length > 1 ) {
						token = data[0];	// original data
						key = data[1];	// no using now
					}
					else {
						token = data[0];
						key = '';
					}
					
					if (token) {
						var val = escapeHTML(token);	//display data
						// this escape is not completed.
						//val = val.replace(
						//	new RegExp( escapeRegex(escapeHTML(q)), 'ig'),
						//	function(k) { return '<span class="' + options.matchClass + '">' + k + '</span>' }
						//	);
						items[items.length] = {'value':val,'key':key, 'token':token};
					}
				}
				
				return items;
			}
			
			function getCurrentResult() {
			
				if (!$resultsBox.is(':visible'))
					return false;
			
				var $currentResult = $results.children('li.' + options.selectClass);
				
				if (!$currentResult.length)
					$currentResult = false;
					
				return $currentResult;

			}
			
			function selectCurrentResult() {
			
				$currentResult = getCurrentResult();
			
				if ($currentResult) {
					var key = $currentResult.text();
					if($.metacharsRE != null && key.match($.metacharsRE) ){
						key = options.isolator + key.replace($.isolatorRE, options.isolator + options.isolator) + options.isolator;
					}
					$input.val(key);
					$resultsBox.hide();

					if( $(options.dataContainer) ) {
						$(options.dataContainer).val($currentResult.attr('id').replace('s_',''));
					}
	
					if (options.onSelect) {
						options.onSelect.apply($input[0]);
					}
				}
			
			}
			
			function nextResult() {
			
				$currentResult = getCurrentResult();
			
				if ($currentResult)
					$currentResult
						.removeClass(options.selectClass)
						.next()
							.addClass(options.selectClass);
				else
					$results.children('li:first-child').addClass(options.selectClass);
			
			}
			
			function prevResult() {
			
				$currentResult = getCurrentResult();
			
				if ($currentResult)
					$currentResult
						.removeClass(options.selectClass)
						.prev()
							.addClass(options.selectClass);
				else
					$resultsBox.hide();
					//$results.children('li:last-child').addClass(options.selectClass);
			
			}
			
			
		}
		
		$.fn.suggest = function(source, options) {
		
			if (!source)
				return;
		
			options = options || {};
			options.source = source;
			options.delay = options.delay || 150;
			options.resultsClass = options.resultsClass || 'ac_results';
			options.resultsBoxClass = options.resultsBoxClass || 'ac_results_box';
			options.selectClass = options.selectClass || 'ac_over';
			options.matchClass = options.matchClass || 'ac_match';
			options.minchars = options.minchars || 2;
			options.delimiter = options.delimiter || '\n';
			options.onSelect = options.onSelect || false;
			options.maxCacheSize = options.maxCacheSize || 65536;
			options.dataDelimiter = options.dataDelimiter || '\t';
			options.dataContainer = options.dataContainer || '#SuggestResult';
			options.attachObject = options.attachObject || null;
			options.metachars = options.metachars || null;
			options.isolator = options.isolator || '"';
			
			// default value is null
			// options.datatype		null, "jsonp"
			
			if(options.metachars != null ){
				$.metacharsRE = new RegExp("[" + escapeRegex(options.metachars) + "]", 'g');
				$.isolatorRE = new RegExp("[" + escapeRegex(options.isolator) + "]", 'g');
			}
			
			this.each(function() {
				new $.suggest(this, options);
			});
	
			return this;
			
		};
		
		function escapeHTML(str){
			return str.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');
		}
		
		function escapeRegex(str){
			return str.replace(/([\\\|\(\)\[\{\^\$\*\+\?\.])/g, '\\$1');
		}
		
	})(jQuery);
	
	// jquery.bgiframe.min.js   for IE6 select form overview bug.
	(function($){$.fn.bgIframe=$.fn.bgiframe=function(s){if($.browser.msie&&/6.0/.test(navigator.userAgent)){s=$.extend({top:'auto',left:'auto',width:'auto',height:'auto',opacity:true,src:'javascript:false;'},s||{});var prop=function(n){return n&&n.constructor==Number?n+'px':n;},html='<iframe class="bgiframe"frameborder="0"tabindex="-1"src="'+s.src+'"'+'style="display:block;position:absolute;z-index:-1;'+(s.opacity!==false?'filter:Alpha(Opacity=\'0\');':'')+'top:'+(s.top=='auto'?'expression(((parseInt(this.parentNode.currentStyle.borderTopWidth)||0)*-1)+\'px\')':prop(s.top))+';'+'left:'+(s.left=='auto'?'expression(((parseInt(this.parentNode.currentStyle.borderLeftWidth)||0)*-1)+\'px\')':prop(s.left))+';'+'width:'+(s.width=='auto'?'expression(this.parentNode.offsetWidth+\'px\')':prop(s.width))+';'+'height:'+(s.height=='auto'?'expression(this.parentNode.offsetHeight+\'px\')':prop(s.height))+';'+'"/>';return this.each(function(){if($('> iframe.bgiframe',this).length==0)this.insertBefore(document.createElement(html),this.firstChild);});}return this;};})(jQuery);