/*
     this based on the ajax examples found @clearnova.com
     
*/

BASE_URL = "."

/*
var _ms_XMLHttpRequest_ActiveX = ""; // Holds type of ActiveX to instantiate
var _ajax;                           // Reference to a global XMLHTTPRequest object for some of the samples
var _logger = true;                  // write output to the Activity Log
var _status_area;                    // will point to the area to write status messages to

if (!window.Node || !window.Node.ELEMENT_NODE) {
    var Node = { ELEMENT_NODE: 1, ATTRIBUTE_NODE: 2, TEXT_NODE: 3, CDATA_SECTION_NODE: 4, ENTITY_REFERENCE_NODE: 5,
                  ENTITY_NODE: 6, PROCESSING_INSTRUCTION_NODE: 7, COMMENT_NODE: 8, DOCUMENT_NODE: 9, DOCUMENT_TYPE_NODE: 10, 
    		  DOCUMENT_FRAGMENT_NODE: 11, NOTATION_NODE: 12 };
}
*/

// From prototype.js @ www.conio.net | Returns an object reference to one or more strings
// ignore the fact that there are no arguments to this method -- javascript doesn't care how many you send (not strongly typed)
// The method checks the actual # of arguments -- returns a single object or an array
/*
function $() {
    var elements = new Array();

    for (var i = 0; i < arguments.length; i++) {
        var element = arguments[i];

        if (typeof element == 'string')
            element = document.getElementById(element);

        if (arguments.length == 1)
            return element;

        elements.push(element);
    }

    return elements;
}
*/

// Method to get text from an XML DOM object
/*
function getTextFromXML( oNode, deep ) {
    var s = "";
    var nodes = oNode.childNodes;

    for (var i = 0; i < nodes.length; i++) {
        var node = nodes[i];

        if (node.nodeType == Node.TEXT_NODE) {
            s += node.data;
        } else if (deep == true && (node.nodeType == Node.ELEMENT_NODE || node.nodeType == Node.DOCUMENT_NODE
                                       || node.nodeType == Node.DOCUMENT_FRAGMENT_NODE)) {
            s += getTextFromXML(node, true);
        };
    }

    ;
    return s;
}
*/

;

// If you plan on doing anything outside of North America, then you'd better encode the things you pass back and forth
// the escape() method in Javascript is deprecated -- should use encodeURIComponent if available
function encode( uri ) {
    if (encodeURIComponent) {
        return encodeURIComponent(uri);
    }

    if (escape) {
        return escape(uri);
    }
}

function decode( uri ) {
    uri = uri.replace(/\+/g, ' ');

    if (decodeURIComponent) {
        return decodeURIComponent(uri);
    }

    if (unescape) {
        return unescape(uri);
    }

    return uri;
}

// log information to the status area textfield
/*
function logger( text, clear ) {
    if (_logger) {
        if (!_status_area) {
            _status_area = document.getElementById("status_area");
        }

        if (_status_area) {
            if (clear) {
                _status_area.value = "";
            }

            var old = _status_area.value;
            _status_area.value = text + ((old) ? "\r\n" : "") + old;
        }
    }
}
*/


/*
 * AJAXRequest: An encapsulated AJAX request. To run, call
 * new AJAXRequest( method, url, async, process, data )
 *
 */
/*
function executeReturn( AJAX ) {
    if (AJAX.readyState == 4) {
        if (AJAX.status == 200) {
            logger('AJAXRequest is complete: ' + AJAX.readyState + "/" + AJAX.status + "/" + AJAX.statusText);
	    if ( AJAX.responseText ) {
		    logger(AJAX.responseText);
		    logger("-----------------------------------------------------------");
		    eval(AJAX.responseText);
	    }
	}
    }
}
*/

/*
function AJAXRequest( method, url, data, process, async, dosend) {
    
    var self = this; // create a "closure"

    // check the dom to see if this is IE or not
    if (window.XMLHttpRequest) {
	// Not IE
        self.AJAX = new XMLHttpRequest();
    } else if (window.ActiveXObject) {
	// Hello IE!
        // Instantiate the latest MS ActiveX Objects
        if (_ms_XMLHttpRequest_ActiveX) {
            self.AJAX = new ActiveXObject(_ms_XMLHttpRequest_ActiveX);
        } else {
	    // loops through the various versions of XMLHTTP to ensure we're using the latest
	    var versions = ["Msxml2.XMLHTTP.7.0", 
	    	"Msxml2.XMLHTTP.6.0", 
	    	"Msxml2.XMLHTTP.5.0", 
	    	"Msxml2.XMLHTTP.4.0", 
	    	"MSXML2.XMLHTTP.3.0", 
	    	"MSXML2.XMLHTTP",
            "Microsoft.XMLHTTP"];

            for (var i = 0; i < versions.length ; i++) {
                try {
		    // try to create the object
		    // if it doesn't work, we'll try again
		    // if it does work, we'll save a reference to the proper one to speed up future instantiations
                    self.AJAX = new ActiveXObject(versions[i]);

                    if (self.AJAX) {
                        _ms_XMLHttpRequest_ActiveX = versions[i];
                        break;
                    }
                }
                catch (objException) {
                // trap; try next one
                } ;
            }

            ;
        }
    }
    
    // if no callback process is specified, then assing a default which executes the code returned by the server
    if (typeof process == 'undefined' || process == null) {
        process = executeReturn;
    }

    self.process = process;

    // create an anonymous function to log state changes
    self.AJAX.onreadystatechange = function( ) {
        //logger("AJAXRequest Handler: State =  " + self.AJAX.readyState);
        self.process(self.AJAX);
    }

    // if no method specified, then default to POST
    if (!method) {
        method = "POST";
    }

    method = method.toUpperCase();

    if (typeof async == 'undefined' || async == null) {
        async = true;
    }

    logger("----------------------------------------------------------------------");
    logger("AJAX Request: " + ((async) ? "Async" : "Sync") + " " + method + ": URL: " + url + ", Data: " + data);

    self.AJAX.open(method, url, async);

    if (method == "POST") {
        self.AJAX.setRequestHeader("Connection", "close");
        self.AJAX.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        self.AJAX.setRequestHeader("Method", "POST " + url + "HTTP/1.1");
    }

    // if dosend is true or undefined, send the request
    // only fails is dosend is false
    // you'd do this to set special request headers
    if ( dosend || typeof dosend == 'undefined' ) {
	    if ( !data ) data=""; 
	    self.AJAX.send(data);
    }
    return self.AJAX;
}
*/

// handle some key press events
/*
function handleKeyUp( e ) {
    e = (!e) ? window.event : e;
    target = (!e.target) ? e.srcElement : e.target;

    if (e.type == "keyup") {
        // skip shift, alt, control keys
        if (e.keyCode == 16 || e.keyCode == 17 || e.keyCode == 18) {
        // do nothing
        }

        else {
            if (target.name == "state1" && !$('state1').value) {
                clearCustomersByState();
            } else if (target.name == "state2" && !$('state2').value) {
                clearCustomersByStateXML();
            } else if (target.name == "google_search") {
                if (target.value) {
                    getSuggest(target);
                } else {
                    $('google_suggest_target').innerHTML = "";
                }
            }
        }
    }
}
*/

/*
  Basic AJAX HELP Functionality
  (99% of the stuff is like this ...)
*/

var helpAJAX; // either the XMLHttpRequest, or the ActiveXobject (IE)

function helpAjax( key ) {
//    logger("HELP: Initializing XMLHttpRequest");
    if ( window.XMLHttpRequest ) {
	   helpAJAX = new XMLHttpRequest();
    } else { // IE
	   helpAJAX = new ActiveXObject("MSXML2.XMLHTTP");
    }
//    logger("HELP: Setting Callback");
    helpAJAX.onreadystatechange = helpCallback;    
//    logger("HELP: Opening POST Request (async)");
    helpAJAX.open( "POST", BASE_URL + "/Servlet/Help?key=" + encode(key), true );
//    logger("HELP: Sending Request");
    // Send request to the server
    helpAJAX.send(null);
}

function helpCallback() {
	// Called from ping
//	logger("HELP: helpCallback. readyState = " + helpAJAX.readyState /* + " | Status: " + helpAJAX.status */); 
	if ( helpAJAX.readyState == 4 ) {
//		logger("Response from server: " + helpAJAX.responseText );
		// find the help DIV and replace its HTML
		var helpZone = document.getElementById("help");
		if (helpZone != null) {
			helpZone.innerHTML = helpAJAX.responseText;
		}
	}
}

function help(evt, key) {
    helpAjax(key);
    
    var e = null;
    var src = null;
    if (window.event) {
    	e = window.event;
    	src = window.event.srcElement;
    }
    else {
    	e = evt;
    	src = e.target;
    }
    e.cancelBubble = true;
    
    /*
	if (src.tagName == 'INPUT'
			|| src.tagName == 'SELECT') {
		// noop
	}
	else {
		window.scrollTo(0, 99999);
	}
	*/
	
    return false;
}

function hoverHelp(event, elementId, hover) {
	var element = document.getElementById(elementId);
	if (hover == true) {
		element.style.backgroundColor = '#EEEEEE';
		element.style.cursor = 'help';
	}
	else {
		element.style.backgroundColor= '';
		element.style.cursor = 'default';
	}
}