/*
	This is the JavaScript file for the AJAX Suggest Tutorial

	You may use this code in your own projects as long as this 
	copyright is left	in place.  All code is provided AS-IS.
	This code is distributed in the hope that it will be useful,
 	but WITHOUT ANY WARRANTY; without even the implied warranty of
 	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
	
	For the rest of the code visit http://www.DynamicAJAX.com
	
	Copyright 2006 Ryan Smith / 345 Technical / 345 Group.	

*/
//Gets the browser specific XmlHttpRequest Object
function getXmlHttpRequestObject() {
	if (window.XMLHttpRequest) {
		return new XMLHttpRequest();
	} else if(window.ActiveXObject) {
		return new ActiveXObject("Microsoft.XMLHTTP");
	}
}

var searchReq = getXmlHttpRequestObject();

function searchSuggest(session_id) {
	var sp = document.getElementById('searchspec');

	if (sp.value.length > 2) {
		if (searchReq.readyState == 4 || searchReq.readyState == 0) {
			var str = escape(sp.value);
			searchReq.open("GET", '/search_suggest.html?search=' + str + '&id=' + session_id, true);
			searchReq.onreadystatechange = handleSearchSuggest; 
			searchReq.send(null);
		}
	} else {
		hide_search_results();
	}
}

function hide_search_results() {
	var ss = document.getElementById('search_suggest');
	ss.style.display="none";
}

function show_search_results() {
	var ss = document.getElementById('search_suggest');
	ss.style.display="block";
}

function handleSearchSuggest() {

	hit = 0;
	if (searchReq.readyState == 4) {
		var ss = document.getElementById('search_suggest');
		ss.innerHTML = '';
		var str = searchReq.responseText.split("\n");
		for(i=0; i < str.length - 1; i++) {
			if (str[i].length > 0) {
				var suggest = '<div onmouseover="javascript:suggestOver(this);" ';
				suggest += 'onmouseout="javascript:suggestOut(this);" ';
				suggest += 'onclick="javascript:setSearch(this.innerHTML);" ';
				suggest += 'class="suggest_link">' + str[i] + '</div>';
				ss.innerHTML += suggest;
				hit = hit + 1;
			}
		}

		if (hit > 0) {
			show_search_results();
		} else {
			hide_search_results();
		}
	}
}

//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';
}

//Click function
function setSearch(value) {
	value = value.replace(/&amp;/g, "&");
	document.getElementById('searchspec').value = value;
	document.getElementById('search_suggest').innerHTML = '';
	document.getElementById('search_suggest').style.display = 'none';
	document.search.submit();
}

function add_body_click() {
	if (window.addEventListener) {
		document.body.addEventListener("click",hide_search_on_click,false);
	} else {
		window.document.body.attachEvent("onclick",hide_search_on_click);
	}
}

function hide_search_on_click(e) {
	var o;

	if (e.target) {
		o=e.target;
	} else {
		o=window.event.srcElement;
	}

	if (o["id"]!="searchspec"&&o["id"]!="search_suggest") {
		hide_search_results();
	}
}

if (window.addEventListener) {
	window.addEventListener("load",add_body_click, false);
} else {
	window.attachEvent("onload",add_body_click);
}