//============================
//AutoSuggestBox version 1.5.3
//============================


//Global variable and methods that keeps track of all ASB 
//javascript objects on the page
var g_ASBObjects;

function asbAddObj(sTextBoxID, oJSAutoSuggestBox)
{
	if (typeof(g_ASBObjects) == "undefined")
		g_ASBObjects=new Array();
			
	g_ASBObjects[sTextBoxID]=oJSAutoSuggestBox;
}


function asbGetObj(sTextBoxID)
{
	//JSAutoSuggestBox.TRACE("asbGetObj : " + g_ASBObjects[sTextBoxID].msTextBoxID);
	return g_ASBObjects[sTextBoxID];
}


///////////////////////////////////////////////////
//Class that stores all auto suggest box properties
///////////////////////////////////////////////////

function JSAutoSuggestBox()
{	
	//Class properties
	var msTextBoxID;
	var msHiddenTextBoxID;
	var msMenuDivID;
	var mnMaxSuggestChars;
	var mnMinSuggestChars;
	var mnKeyPressDelay;
	var msMenuCSSClass;
	var msMenuItemCSSClass;
	var msSelMenuItemCSSClass;
	var mbUseIFrame;
	var msContext;
	var msPageId;
	var msCityId;
	var msCitypartId;
	var msCurrentFormId;

	var msResourceDir;
	var mbHasFocus;
	var Language;

	//Internal attributes
	var mnSelMenuItem = 0;	
	var mbCancelSubmit;
	var msOldTextBoxValue="";
	var responseVerify = "abcd123";
	

	//Class methods
	this.GetKey				=GetKey;
	this.GetTextBoxCtrl		=GetTextBoxCtrl;
	this.GetMenuDiv			=GetMenuDiv;
	
	this.GetXmlHttp			=GetXmlHttp;
	this.GetDataFromServer	=GetDataFromServer;
	
	this.SetSelectedValue	=SetSelectedValue;
	this.SetTextBoxValue	=SetTextBoxValue;
	this.GetTextBoxValue	=GetTextBoxValue;
	this.GetCityId			=GetCityId;
	this.GetCitypartId		=GetCitypartId;
	
    this.OnMouseClick		=OnMouseClick;
	this.OnMouseOver		=OnMouseOver;
 
 	this.OnKeyDown			=OnKeyDown;
	this.OnKeyPress			=OnKeyPress;
	this.OnKeyUp			=OnKeyUp;
    
    this.OnBlur				=OnBlur;
    
    this.GetSelMenuItemDiv	=GetSelMenuItemDiv;
    this.GetMenuItemDivID	=GetMenuItemDivID;
    this.GetMenuItemDiv		=GetMenuItemDiv;
    
    this.MoveUp				=MoveUp;
    this.MoveDown			=MoveDown;
    
    this.SelectMenuItem		=SelectMenuItem;
    this.UnselectMenuItem	=UnselectMenuItem;
    
    this.IsVisibleMenuDiv	=IsVisibleMenuDiv;
	this.MoveMenuDivIfAbsolutePos	=MoveMenuDivIfAbsolutePos;
	this.ShowMenuDiv		=ShowMenuDiv;
	this.HideMenuDiv		=HideMenuDiv;
	
	this.Language			=Language;

	//Detects what key was pressed
	function GetKey(evt)
	{
		evt = (evt) ? evt : (window.event) ? event : null;
		if (evt)
		{
			var cCode = (evt.charCode) ? evt.charCode :
					((evt.keyCode) ? evt.keyCode :
					((evt.which) ? evt.which : 0));
			return cCode; 
		}
	}
	
	function GetCityId()
	{
		var elem = eval('document.'+this.msCurrentFormId+'.'+this.msCityId);
		return elem.value;
	}
	
	function GetCitypartId()
	{
		var elem = eval('document.'+this.msCurrentFormId+'.'+this.msCitypartId);
		return elem.value;
	}
	
	
	function GetTextBoxCtrl()
	{
		return document.getElementById(this.msTextBoxID);
	}
	
	
	function GetMenuDiv()
	{
		return document.getElementById(this.msMenuDivID);
	}
	
	//Create and return XmlHttp object
	function GetXmlHttp()
	{		
		if (typeof XMLHttpRequest != "undefined") {
        	return new XMLHttpRequest();
    	} else if (window.ActiveXObject) {
     		var aVersions = [ "MSXML2.XMLHttp.5.0",
        		"MSXML2.XMLHttp.4.0","MSXML2.XMLHttp.3.0",
        		"MSXML2.XMLHttp","Microsoft.XMLHttp"
      			];

     			for (var i = 0; i < aVersions.length; i++) {
        		try {
           		var oXmlHttp = new ActiveXObject(aVersions[i]);
            		return oXmlHttp;
        		} catch (oError) {
            		//alert(oError);
        		}
      		}
    	}
     throw new Error("XMLHttp object could be created.");
	}	
	

  	// Make a call back to our server side page and return the results from our query 
	// to a DIV tag sitting under the text box
	function GetDataFromServer(sValue)
	{ 
		var sUrl;
		if ((sValue.length + 1) > this.mnMinSuggestChars) 
		{ 
		
			sUrl = "autocomplete?text_box_id=" + escape(this.msTextBoxID) + 
										"&rand=" + Math.floor(Math.random()*65000) +
										"&lang=" + this.Language +
										"&verifyCode=" + responseVerify + 
										"&cityCode=" + this.GetCityId() +
										//"&citypartCode=" + this.GetCitypartId() +
										"&keyword=" + escape(sValue); // encodeURIComponent(sValue);
		
			TRACE("GetDataFromServer: " + sUrl);
	
			var oXmlHttp = GetXmlHttp();
			
			oXmlHttp.open("GET", sUrl, true);
		
			var me = this;	//Use it to be able to access ShowMenuDiv and HideMenuDiv in the function()
			
			oXmlHttp.onreadystatechange = function()
			{	
				if (oXmlHttp.readyState == 4) 
				{	
					if (oXmlHttp.responseText != "")
					{ 
						if (me.mbHasFocus)
						{
							//me.ShowMenuDiv(oXmlHttp.responseText);
							var response = oXmlHttp.responseText;
							if (response.substring(0, 7) == responseVerify) {
								if (response.substr(7) != "") {
									me.ShowMenuDiv(response.substr(7));
								}
							}
							me.SetSelectedValue(me.GetTextBoxValue());
						}
					}				
					else
					{	
						me.HideMenuDiv();
					}
				}
			}
			oXmlHttp.send(null);
		}
	}


	
	function SetSelectedValue(sValue)
	{
		TRACE("SetSelectedValue: " + sValue);
	
		var hdnSelectedValue=document.getElementById(this.msHiddenTextBoxID);
		hdnSelectedValue.value=sValue;
	}

	function SetTextBoxValue()
	{
		var divMenuItem=this.GetSelMenuItemDiv();
			
		if(divMenuItem)
		{
			//var sValue=divMenuItem.getAttribute('value');
			//var sCode=divMenuItem.getAttribute('code');
			
			//TRACE("SetTextBoxValue : Set selected item to " + sValue);
		
			//Set selected value of control to the value of selected menu item
			//this.SetSelectedValue(sValue);
			//this.SetHiddenValue(sCode);
				
			var txtCtrl=this.GetTextBoxCtrl();
			txtCtrl.value = GetInnerHtml(divMenuItem);
			this.SetSelectedValue(txtCtrl.value);
		}
	}


	function GetTextBoxValue()
	{
		var txtCtrl=this.GetTextBoxCtrl();
		return(txtCtrl.value);
	}
	
	
				
	function OnMouseClick(nMenuIndex)
	{
		this.mnSelMenuItem=nMenuIndex;
	
		this.SetTextBoxValue();
		this.HideMenuDiv();
	}
	


	function OnMouseOver(nMenuIndex)
	{
		this.SelectMenuItem(nMenuIndex);
	}
	
	
		
	function OnKeyDown(evt)
	{
		TRACE("OnKeyDown : " + this.GetKey(evt) + ", " + this.msTextBoxID);
	
		//Indicate that control has focus
		this.mbHasFocus=true;
		
		//Save current text box value before key press takes affect
		this.msOldTextBoxValue=this.GetTextBoxValue();
		TRACE("OnKeyDown : old text box value='" + this.msOldTextBoxValue + "'");
		
		var nKey;
		nKey=this.GetKey(evt);
				
		TRACE("OnKeyDown : Key is " + nKey);
				
		//Detect if the user is using the down button
		if(nKey==38) //Up arrow
		{
			this.MoveDown()
		}
		else if(nKey==40) //Down arrow
		{
			this.MoveUp()
		}
		else if(nKey==13) //Enter
		{
			TRACE("OnKeyDown : IsVisibleMenuDiv - " + this.IsVisibleMenuDiv());
			if (this.IsVisibleMenuDiv())
			{
				this.HideMenuDiv();
				
				evt.cancelBubble = true;
				
				if (evt.returnValue) evt.returnValue = false;
				if (evt.stopPropagation) evt.stopPropagation();
				
				this.mbCancelSubmit=true;
     		}
     		else
     		{
     			this.mbCancelSubmit=false;
     		}
		}
		else
		{
			this.HideMenuDiv();
		}
				
		return true;
	}
	
	
	function OnKeyPress(evt)
	{
		TRACE("OnKeyPress : " + this.GetKey(evt));
		if ((this.GetKey(evt)==13) && (this.mbCancelSubmit)) 
		{
			return false;
		}
			
		return true;
	}
	
	
	
	function OnKeyUp(evt)
	{
		var nKey;
		nKey=this.GetKey(evt);
		
		TRACE("OnKeyUp : " + nKey);
		
		
		//Skip up/down/enter
		if ((nKey!=38) && (nKey!=40) && (nKey!=13))
		{
			var sNewValue;
			sNewValue=this.GetTextBoxValue();
			
			//Limit num of characters to display suggestions	
			if ((sNewValue.length <= this.mnMaxSuggestChars) && (sNewValue.length > 0))
			{
				TRACE("OnKeyUp : Getting data for '" + sNewValue + "'");
				
				var divMenu = this.GetMenuDiv();
				if (divMenu.timer) window.clearTimeout(divMenu.timer);
				
				//Add escape char to single quote
				sNewValue=sNewValue.replace(/\'/, "\\\'");
				//Set timer to update div.  If user types quickly return suggestions when he stops.  
				var sFunc="asbGetObj('" + this.msTextBoxID + "').GetDataFromServer('" + sNewValue + "')";
				TRACE("OnKeyUp : " + sFunc);
							
				divMenu.timer = window.setTimeout(sFunc, this.mnKeyPressDelay);
			}
		
		
			if (this.msOldTextBoxValue!=sNewValue)
			{
				this.SetSelectedValue("");
			//	if (sNewValue.length == 0) {
			//		document.getElementById(this.msTextBoxID + "_SelectedValue").value = "";
			//	}
			}
		}
	}
		
	
	function OnBlur()
	{
		TRACE("OnBlur");
	
		this.HideMenuDiv();
		this.mbHasFocus=false;
	}
	
		
	function GetSelMenuItemDiv()
	{
		return this.GetMenuItemDiv(this.mnSelMenuItem);
	}
			
			
	function GetMenuItemDivID(nMenuItem)
	{
		return (this.msTextBoxID + "_mi_" + nMenuItem);
	}
	
		
	function GetMenuItemDiv(nMenuItem)
	{
		var sDivMenuItemID=this.GetMenuItemDivID(nMenuItem);
		return document.getElementById(sDivMenuItemID)
	}
		

	function MoveUp()
	{
		var nMenuItem;
		nMenuItem=this.mnSelMenuItem+1;
		
		//Check if menu item exists
		if(this.GetMenuItemDiv(nMenuItem))
		{
			this.SelectMenuItem(nMenuItem)
		}
	}


	function MoveDown()
	{
		var nMenuItem;
		nMenuItem=this.mnSelMenuItem-1;
		if(nMenuItem!=0)
		{
			this.SelectMenuItem(nMenuItem);
		}
	}


	//Highlights a div
	function SelectMenuItem(nMenuItem)
	{
		var divMenuItem=this.GetMenuItemDiv(nMenuItem)
					
		if(divMenuItem)
		{
			if (nMenuItem!=this.mnSelMenuItem)
			{
				this.UnselectMenuItem();
				
				this.mnSelMenuItem=nMenuItem;
				this.SetTextBoxValue();
						
				divMenuItem.className=this.msSelMenuItemCSSClass;
			}
		}
	}


	//unhighlights a div
	function UnselectMenuItem()
	{
		var divMenuItem=this.GetSelMenuItemDiv();
	
		if(divMenuItem)
		{
			divMenuItem.className=this.msMenuItemCSSClass;
		}
	}


	
	function IsVisibleMenuDiv()
	{
		if (this.GetMenuDiv().style.visibility == 'hidden')
		{
			return false;
		}
		else
		{
			return true;
		}
	}
	
	
	
	function MoveMenuDivIfAbsolutePos()
	{
		var txtCtrl = this.GetTextBoxCtrl();
		var divMenu = this.GetMenuDiv();
				
		if (txtCtrl.style.position != "absolute")
			return;
			
		TRACE("MoveMenuDivIfAbsolutePos Moving absolute");
		
		
		//Move menu right under text box
		divMenu.style.left = txtCtrl.offsetLeft;
		divMenu.style.top = txtCtrl.offsetTop + txtCtrl.offsetHeight;
	}
	
	
	
	function ShowMenuDiv(sDivContent)
	{
		this.MoveMenuDivIfAbsolutePos();
		
		TRACE("ShowMenuDiv : " + this.msTextBoxID);
	
		var divMenu = this.GetMenuDiv();
		var sInnerHtml;

		//Use IFrame of the same size as div		
		if (IsIE() && this.mbUseIFrame) 
		{
			sInnerHtml = "<div id='" + this.msMenuDivID + "_content'>";
			sInnerHtml += sDivContent;
			sInnerHtml += "</div>";
			
			var sBlankPage = "/blank.html";	//Use blank page to hide 'nonsecure items' message in IE when using HTTPS
			sInnerHtml += "<iframe id='" + this.msMenuDivID + "_iframe' src='" + sBlankPage  + "' frameborder='1' scrolling='no'></iframe>";
		}
		else
		{
			sInnerHtml = sDivContent;
		}
		
		
		divMenu.innerHTML = sInnerHtml;
		
		
		if (IsIE() && this.mbUseIFrame) 
		{
			var divContent;
			divContent=document.getElementById(this.msMenuDivID + "_content");
			
			var divIframe;
			divIframe=document.getElementById(this.msMenuDivID + "_iframe");
					
			//Remember display type
			divContent.className=this.msMenuCSSClass;
			divMenu.className="asbMenuBase";
				
			divIframe.style.width = divContent.offsetWidth + 'px';
			divIframe.style.height = divContent.offsetHeight + 'px';
			divIframe.marginTop = "-" + divContent.offsetHeight + 'px';
		}	
		
		divMenu.style.visibility = 'visible';
	}
	

				
	function HideMenuDiv()
	{
		this.GetMenuDiv().style.visibility = 'hidden';
		this.mnSelMenuItem=0;
	}
	
	
	//Utility functions	(don't need this.)
	function IsIE()
	{
		return ( navigator.appName=="Microsoft Internet Explorer" ); 
	}
	

	function IsNav()
	{
		return ( navigator.appName=="Netscape" );
	}
	
	
	function GetInnerHtml(oItem)
	{
		var sOut;
		if (oItem.innerText)
		{
			sOut=oItem.innerText;   // IE
		}
		else if (oItem.textContent)
		{
			sOut=oItem.textContent; // Mozilla
		}
		return (sOut);
	} 


	function TRACE(sText)
	{
		var txtTrace = document.getElementById("txtASBTrace");
		if (txtTrace != null)
			txtTrace.value = txtTrace.value + sText + "\n";
	}
}