function showBusyLayer() {
		var busyLayer = document.getElementById("busy_layer");

	if (window.innerHeight && window.scrollMaxY) {	
		yScroll = window.innerHeight + window.scrollMaxY;
		var deff = document.documentElement;
		var hff = (deff&&deff.clientHeight) || document.body.clientHeight || window.innerHeight || self.innerHeight;
		yScroll -= (window.innerHeight - hff);
	} else if (document.body.scrollHeight > document.body.offsetHeight || document.body.scrollWidth > document.body.offsetWidth){
		yScroll = document.body.scrollHeight;
	} else { 
		yScroll = document.body.offsetHeight;
  	}

	if (busyLayer != null) {
		busyLayer.style.visibility = "visible";
		busyLayer.style.height = yScroll;
	}
}
	
function hideBusyLayer() {
		var busyLayer = document.getElementById("busy_layer");
		if (busyLayer != null) {
			busyLayer.style.visibility = "hidden";
			busyLayer.style.height = "0px";
		}
}

function _get_obj_toppos(obj)
{
	var top = obj.offsetTop;
	
	while( (obj = obj.offsetParent) != null )
	{
		top += obj.offsetTop;
	}
	
	return top;
}

function center_div()
{
	this.divname = '';
	this.divobj  = '';
}
center_div.prototype.clear_div = function()
{
	try
	{
		if ( ! this.divobj )
		{
			return;
		}
		else
		{
			this.divobj.style.display  = 'none';
		}
	}
	catch(e)
	{
		return;
	}
}
center_div.prototype.Ywindow = function()
{
	var scrollY = 0;
	
	if ( document.documentElement && document.documentElement.scrollTop )
	{
		scrollY = document.documentElement.scrollTop;
	}
	else if ( document.body && document.body.scrollTop )
	{
		scrollY = document.body.scrollTop;
	}
	else if ( window.pageYOffset )
	{
		scrollY = window.pageYOffset;
	}
	else if ( window.scrollY )
	{
		scrollY = window.scrollY;
	}
	
	return scrollY;
};
center_div.prototype.move_div = function()
{
	try
	{
		this.divobj = document.getElementById( this.divname );
	}
	catch(e)
	{
		return;
	}
	
	var my_width  = 0;
	var my_height = 0;
	
	if ( typeof( window.innerWidth ) == 'number' )
	{
		my_width  = window.innerWidth;
		my_height = window.innerHeight;
	}
	else if ( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) )
	{
		my_width  = document.documentElement.clientWidth;
		my_height = document.documentElement.clientHeight;
	}
	else if ( document.body && ( document.body.clientWidth || document.body.clientHeight ) )
	{
		my_width  = document.body.clientWidth;
		my_height = document.body.clientHeight;
	}
	
	this.divobj.style.position = 'absolute';
	this.divobj.style.display  = 'block';
	this.divobj.style.zIndex   = 99;
	
	var divheight = parseInt( this.divobj.style.Height );
	var divwidth  = parseInt( this.divobj.style.Width );
	
	divheight = divheight ? divheight : 50;
	divwidth  = divwidth  ? divwidth  : 200;
	
	var scrolly = this.Ywindow();
	
	var setX = ( my_width  - divwidth  ) / 2;
	var setY = ( my_height - divheight ) / 2 + scrolly;
	
	setX = ( setX < 0 ) ? 0 : setX;
	setY = ( setY < 0 ) ? 0 : setY;
	
	this.divobj.style.left = setX + "px";
	this.divobj.style.top  = setY + "px";
};

function vc_ajax(file)
{
	this.AjaxFailedAlert = "AJAX not supported.\n";
	this.requestFile = file;
	this.method = "POST";
	this.URLString = "";
	this.encodeURIString = true;
	this.execute = false;
	this.add_html = false;
	this.loading_fired		= 0;
	this.centerdiv          = null;
        this.element = null;

	this.onLoading = function() { };
	this.onLoaded = function() { };
	this.onInteractive = function() { };
	this.onCompletion = function() { };

	this.onShow = function( message )
	{
		if ( ! this.loading_fired )
		{
			this.loading_fired = 1;
		
			//------------------------------------------------
			// Change text?
			//------------------------------------------------
		
		if ( message )
		{
			document.getElementById( 'loading-layer-text' ).innerHTML = message;
		}
		
		this.centerdiv         = new center_div();
		this.centerdiv.divname = 'loading-layer';
		this.centerdiv.move_div();
		}
		
		return;
	};

	this.onHide = function()
	{
		try
		{
			if ( this.centerdiv && this.centerdiv.divobj )
			{
				this.centerdiv.clear_div();
			}
		}
		catch(e)
		{
		}
	
		this.loading_fired = 0;
	
		return;
        };


	this.createAJAX = function() {
		try {
			this.xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (err) {
				this.xmlhttp = null;
			}
		}
		if(!this.xmlhttp && typeof XMLHttpRequest != "undefined")
			this.xmlhttp = new XMLHttpRequest();
		if (!this.xmlhttp){
			this.failed = true; 
		}
	};
	
	this.setVar = function(name, value)
        {
		if (this.URLString.length < 3)
                   {this.URLString = name + "=" + value;}
                else {this.URLString += "&" + name + "=" + value;}
                
                if (name == "element")
                    { 
                        this.element = value;
                        this.inner_html=1;
                    }
	};
	
	this.encVar = function(name, value){
		var varString = encodeURIComponent(name) + "=" + encodeURIComponent(value);
	return varString;
	};
	
	this.encodeURLString = function(string){
		varArray = string.split('&');
		for (i = 0; i < varArray.length; i++){
			urlVars = varArray[i].split('=');
			if (urlVars[0].indexOf('amp;') != -1){
				urlVars[0] = urlVars[0].substring(4);
			}
			varArray[i] = this.encVar(urlVars[0],urlVars[1]);
		}
                return varArray.join('&');
	};

	this.encodeVAR = function(url){
	
            url = url.toString();

            var regcheck = url.match(/[\x90-\xFF]/g);

            if ( regcheck )
            {
                    for (var i = 0; i < i.length; i++)
                    {
                            url = url.replace(regcheck[i], '%u00' + (regcheck[i].charCodeAt(0) & 0xFF).toString(16).toUpperCase());
                    }
            }

            return escape(url).replace(/\+/g, "%2B");
	};
	
	this.runResponse = function()
        {
            debugger;
            var milisec = new Date;
            var jsfound = false;
            milisec = milisec.getTime();
            var js_reg = /<script.*?>(.|[\r\n])*?<\/script>/ig;
            var js_str = js_reg.exec(this.response);
            if (js_str != null)
            {
                var js_arr = new Array(js_str.shift());
                jsfound = true;
                while(js_str)
                {
                    js_str = js_reg.exec(this.response);
                    if (js_str != null) js_arr.push(js_str.shift());
                }
                for(var i=0; i<js_arr.length;i++)
                    {
                         this.response = this.response.replace(js_arr[i],'<span id="'+milisec+i+'" style="display:none;"></span>');
                    }
            }
            if ( this.add_html )
            {
                this.elementObj.innerHTML += this.response;
            } 
            else
            {
                this.elementObj.innerHTML = this.response; 
            }
            if (jsfound)
            {
                var js_content_reg = /<script.*?>((.|[\r\n])*?)<\/script>/ig;
                for (i = 0; i < js_arr.length; i++)
                {
                    var mark_node = document.getElementById(milisec+''+i);
                    var mark_parent_node = mark_node.parentNode;
                    mark_parent_node.removeChild(mark_node);
                    js_content_reg.lastIndex = 0;
                    var js_content = js_content_reg.exec(js_arr[i]);
                    var script_node = mark_parent_node.appendChild(document.createElement('script'));
                    script_node.text = js_content[1];

                    var script_params_str = js_arr[i].substring(js_arr[i].indexOf(' ',0),js_arr[i].indexOf('>',0));
                    var params_arr = script_params_str.split(' ');
                    if (params_arr.length > 1)
                    {
                        for (var j=0;j< params_arr.length; j++ )
                        {
                            if(params_arr[j].length > 0)
                            {
                                var param_arr = params_arr[j].split('=');
                                param_arr[1] = param_arr[1].substr(1,(param_arr[1].length-2));
                                script_node.setAttribute(param_arr[0],param_arr[1]);
                            }
                        }
                    }
                }
            }
	};

	this.sendAJAX = function(urlstring)
        {
		this.responseStatus = new Array(2);
		if(this.failed && this.AjaxFailedAlert)
                    {alert(this.AjaxFailedAlert); }
                else
                    {
			if (urlstring){ 
				if (this.URLString.length){
					this.URLString = this.URLString + "&" + urlstring; 
				} else {
					this.URLString = urlstring; 
				}
			}
			if (this.encodeURIString){
				var timeval = new Date().getTime(); 
				this.URLString = this.encodeURLString(this.URLString);
				this.setVar("rndval", timeval);
			}
			if (this.element)
                        {
                            this.elementObj = document.getElementById(this.element);
                        }
			if (this.xmlhttp)
                        {
				var self = this;
				if (this.method == "GET") {
					var totalurlstring = this.requestFile + "?" + this.URLString;
					this.xmlhttp.open(this.method, totalurlstring, true);
				} else {
					this.xmlhttp.open(this.method, this.requestFile, true);
				}
				if (this.method == "POST"){
  					try {
						this.xmlhttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded');  
					} catch (e) {}
				}

				this.xmlhttp.send(this.URLString);
				this.xmlhttp.onreadystatechange = function()
                                {
                                    switch (self.xmlhttp.readyState)
                                    {
					case 1:
                                            self.onLoading();
                                        break;
                                        case 2:
                                            self.onLoaded();
                                        break;
                                        case 3:
                                            self.onInteractive();
					break;
					case 4:
                                            self.response = self.xmlhttp.responseText;
                                            self.responseXML = self.xmlhttp.responseXML;
                                            self.responseStatus[0] = self.xmlhttp.status;
                                            self.responseStatus[1] = self.xmlhttp.statusText;
                                            self.onHide();
                                            self.onCompletion();
                                            if (self.elementObj)
                                            {
                                                var elemNodeName = self.elementObj.nodeName;
                                                elemNodeName = elemNodeName.toLowerCase();
                                                if (elemNodeName == "input" || elemNodeName == "select" || elemNodeName == "option" || elemNodeName == "textarea")
                                                {
                                                    if (self.response == 'error') { alert('Access denied'); }
                                                    else {}
                                                    if ( self.inner_html )
                                                        {
                                                              self.elementObj.options.length=0;
                                                            if ((navigator.appName=='Netscape') || (navigator.appName=='Opera'))
                                                            {
                                                                self.elementObj.innerHTML=self.response;
                                                            }
                                                            else
                                                               {
                                                                   var RegValue=/<option value='(\d+)'>([^<]*)<\/option>/g ;
                                                                   var counter=0;
                                                                   while ((value = RegValue.exec(self.response)) != null) //&& ((name = RegName.exec(self.response)) != null))
                                                                        {
                                                                         self.elementObj.options[counter] = new Option(value[2], value[1]);
                                                                         counter++;
                                                                        }
                                                               }
                                                        }
                                                    if ( self.add_html )
                                                    {
                                                        self.elementObj.value += self.response;
                                                    }
                                                    else { self.elementObj.value = self.response;}
                                                }
                                            }
                                            else
                                            {
                                                if (self.response == 'error') { alert('Access denied'); }
                                                else { }
                                                if(self.execute) { self.runResponse(); }
                                                else {}
                                            }
                                            self.URLString = "";
                                            break;
                                    }
                            }
			}
		 }
	}//this.sendAjax
this.createAJAX();
}//function vc_ajax(file)