function popUp(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=820,height=720,left = 50,top = 50');");
}

function checkobject(inParent,theVal) {
	if(inParent){
		if (window.opener.document.getElementById(theVal) != null) 
		{
			return true;
		} 
		else 
		{
			return false;
		}
	}
	else
	{
		if (document.getElementById(theVal) != null) 
		{
			return true;
		} 
		else 
		{
			return false;
		}
	}
}
function highlight(id, myclass)
{
	if(checkobject(false, id )){
		document.getElementById( id ).className = myclass;
	}
}
function show_product( list )
{
	document.getElementById(list).className = "product_span"; 
}

function hide_product( list )
{
	document.getElementById(list).className = "product_span_hide"; 
}
function setAutocomplete(){
	if(document.getElementById( "search_field" ) != null){
		document.getElementById( "search_field" ).setAttribute( "autocomplete","off" );
	}
	if(document.getElementById( "security_answer" ) != null){
		document.getElementById( "security_answer" ).setAttribute( "autocomplete","off" );
	}
	if(document.getElementById( "quantity" ) != null){
		document.getElementById( "quantity" ).setAttribute( "autocomplete","off" );
	}
	if(document.getElementById( "cardholder_name" ) != null){
		document.getElementById( "cardholder_name" ).setAttribute( "autocomplete","off" );
	}
	if(document.getElementById( "card_number" ) != null){
		document.getElementById( "card_number" ).setAttribute( "autocomplete","off" );
	}
	if(document.getElementById( "issue_number" ) != null){
		document.getElementById( "issue_number" ).setAttribute( "autocomplete","off" );
	}
	if(document.getElementById( "security_number" ) != null){
		document.getElementById( "security_number" ).setAttribute( "autocomplete","off" );
	}
}

function show_list( list )
{
	if(live_search_is_on == undefined){
		document.getElementById(list).className = "show"; 
		document.getElementById('preview_total').style.zIndex = 400;
	}
	else{
		if(live_search_is_on != true){
			document.getElementById(list).className = "show"; 
			document.getElementById('preview_total').style.zIndex = 400;
		}
	}
		
}
function saveBasketAndUpdate( count )
{
	var m = '';
	count = count * 2;
	for (var x = 0; x < count; x++)
	   {	
			
			m = m + '&quantity_'+(x)+'='+document.basket_form.elements[(x)].value;
			m = m + '&productid_'+(x)+'='+document.basket_form.elements[(x+1)].value;
			x++;
	   }

	return m;
}
function hide_list( list )
{
	if(document.getElementById(list) != null){document.getElementById(list).className = "hide"}; 
}
function bring_to_front ( id ){
	if(live_search_is_on == undefined){
		document.getElementById(id).className = "ontop";
		document.getElementById('preview_total').style.zIndex = 400;
	}
	else{
		if(live_search_is_on != true){
			document.getElementById(id).className = "ontop";
			document.getElementById('preview_total').style.zIndex = 400;
		}
	}
		
}
function send_to_back ( id ){
	document.getElementById(id).className = "none";
}

function clear_field( field )
{
	if(document.getElementById(field).value == "search"){
		document.getElementById(field).value = ""; 
		document.getElementById(field).style.color = 'black';
	}
	else{
		document.getElementById(field).style.color = 'black';
	}
}
function disable_button( button )
{
	document.getElementById(button).disabled = true; 

}
function swapbuttonsrc( src, id ){
	document.getElementById(id).src = "images/"+src+"_hover.jpg";

}
function swapbackbuttonsrc( src, id ){
	document.getElementById(id).src = "images/"+src+".jpg";

}
function swapclickbuttonsrc( src, id ){
	document.getElementById(id).src = "images/"+src+"_click.jpg";

}
function seachBoxChange( id ){
	if(id == 'isbn'){
		document.getElementById('title').checked = false; 
		document.getElementById('description').checked = false; 
		document.getElementById('author').checked = false; 
	}
	else if(id == 'author'){
		document.getElementById('title').checked = false; 
		document.getElementById('description').checked = false; 
		document.getElementById('isbn').checked = false; 
	}
	else if(id == 'description'){ 
		document.getElementById('author').checked = false; 
		document.getElementById('isbn').checked = false; 
	}
	else if(id == 'title'){ 
		document.getElementById('author').checked = false; 
		document.getElementById('isbn').checked = false; 
	}
	else{
		document.getElementById('isbn').checked = false; 
	}
}
	
function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}
function createCookieSecs(name,value,secs) {
	if (secs) {
		var date = new Date();
		date.setTime(date.getTime()+(secs*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}
function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

var xmlHttp;

var live_search_is_on;

if(readCookie('livesearch_status') == null){
	createCookie('livesearch_status','true',365);
}

function toggle_livesearch(){
	if(readCookie('livesearch_status') == 'true'){
		createCookie('livesearch_status','false',365);
	}else{
		createCookie('livesearch_status','true',365);
	}
	document.getElementById("search_field").focus();
}

function showResult()
{
	var str = document.getElementById("search_field").value;

	if(readCookie('livesearch_status') == 'true'){
		if (str.length<3)
		 { 
		 document.getElementById("livesearch"). innerHTML="";
		 document.getElementById("livesearch"). className='hidden';
		 live_search_is_on = false;
		 return
		 }
		
		if ((str=='search') && (document.getElementById("livesearch").focus()))
		 { 
		 document.getElementById("livesearch"). innerHTML="";
		 document.getElementById("livesearch"). className='hidden';
		 live_search_is_on = false;
		 return
		 }
		  
		xmlHttp=GetXmlHttpObject()
		
		if (xmlHttp==null)
		 {
		 alert ("Browser does not support HTTP Request");
		 document.getElementById("livesearch"). className='hidden';
		 live_search_is_on = false;
		 return
		 } 
		
		
		var url="includes/livesearch.php"
		url=url+"?author=" + document.getElementById('author').checked
		url=url+"&title=" + document.getElementById('title').checked
		url=url+"&description=" + document.getElementById('description').checked
		url=url+"&isbn=" + document.getElementById('isbn').checked
		url=url+"&q="+str
		url=url+"&sid="+Math.random()
		xmlHttp.onreadystatechange=stateChanged 
		xmlHttp.open("GET",url,true)
		xmlHttp.send(null)
		
	}
} 

function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
 document.getElementById("livesearch"). innerHTML=xmlHttp.responseText;
 document.getElementById("livesearch"). className='show';
 live_search_is_on = true;
 } 
}

function GetXmlHttpObject()
{
var xmlHttp=null;
try
 {
 // Firefox, Opera 8.0+, Safari
 xmlHttp=new XMLHttpRequest();
 }
catch (e)
 {
 // Internet Explorer
 try
  {
  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp;
}

var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
function displayNav( nav ){
	nav = nav.replace(/&lt;/g,"<");
	nav = nav.replace(/&gt;/g,">");
	nav = "<h4>"+nav+"</h4>";
	document.getElementById('navi1').innerHTML = nav;
	document.getElementById('navi2').innerHTML = nav;
}
BrowserDetect.init();
if(BrowserDetect.browser == "Safari"){
	document.write('<link rel="stylesheet" type="text/css" href="style/style_SAFARI.css"  />');
}
else if(BrowserDetect.browser == "Opera"){
	document.write('<link rel="stylesheet" type="text/css" href="style/style_OPERA.css"  />');
} 
else if(BrowserDetect.browser == "Firefox"){
	document.write('<link rel="stylesheet" type="text/css" href="style/style_FIREFOX.css"  />');
} 
else if(BrowserDetect.browser == "Explorer"){
	if(BrowserDetect.version == 6)
	{
		document.write('<link rel="stylesheet" type="text/css" href="style/style_IE-6.css"  />');
	}
	else if (BrowserDetect.version == 7)
	{
		document.write('<link rel="stylesheet" type="text/css" href="style/style_IE-7.css"  />');
	}
	else if (BrowserDetect.version == '5.5')
	{
		document.write('<link rel="stylesheet" type="text/css" href="style/style_IE-55.css"  />');
	}
	else if (BrowserDetect.version == '5.01')
	{
		document.write('<link rel="stylesheet" type="text/css" href="style/style_IE-501.css"  />');
	}
}