var inCall = false;

var AjaxQueue = {
	urlQueue: [], //Request URLs will be pushed into this array
	elementsQueue: [], //Element IDs of elements to be updated on completion of a request ( as in Ajax.Updater )
	optionsQueue: [], //Request options will be pushed into this array
	//setBatchSize: function(bSize){ //Method to set a different batch size. Recommended: Set batchSize before making requests
		//this.batchSize = bSize;
	//},
	push: function(url, options, elementID){ //Push the request in the queue. elementID is optional and required only for Ajax.Updater calls
		this.urlQueue.push(url);
		this.optionsQueue.push(options);
		if(elementID!=null){
			this.elementsQueue.push(elementID);
		} else {
			this.elementsQueue.push("NOTSPECIFIED");
		}
		Ajax.activeRequestCount++;
		this._processNext();
	},
	_processNext: function() { // Method for processing the requests in the queue. Private method. Don't call it explicitly

			//if(Ajax.activeRequestCount > 0) alert(inCall+ " :: "+Ajax.activeRequestCount);
		//three.innerHTML = "<br />";
		//var one document.getElementById("one");
		if(inCall == false && Ajax.activeRequestCount > 0) // Check if the currently processing request count is less than batch size
		{	
			
			

			if(AjaxQueue.elementsQueue.first()=="NOTSPECIFIED") { //Check if an elementID was specified
				// Call Ajax.Request if no ElementID specified
				//Call Ajax.Request on the first item in the queue and remove it from the queue
				//var vUrl = AjaxQueue.urlQueue.shift()+ '&' + Math.random();
				var vUrl = AjaxQueue.urlQueue.shift();
				var vOptions = AjaxQueue.optionsQueue.shift();

				// fixed for ajax ..
				if (vOptions['parameters'])
				{
					vOptions['parameters'] += '&'+ Math.random();
				}

				//new Ajax.Request(vUrl); 
				new Ajax.Request(vUrl, vOptions); 
				inCall = false; //for some reason doesn't work in IE, no time to figure it out any longer

				var junk = AjaxQueue.elementsQueue.shift();

				Ajax.activeRequestCount--;
				
			} else {
				// Call Ajax.Updater if an ElementID was specified.
				//Call Ajax.Updater on the first item in the queue and remove it from the queue
				//new Ajax.Updater(AjaxQueue.elementsQueue.shift(), AjaxQueue.urlQueue.shift(), AjaxQueue.optionsQueue.shift());				
			}		
		}
	}
};

/*Ajax.Responders.register({
	//Call AjaxQueue._processNext on completion ( success / failure) of any AJAX call.
	onComplete: function () { 
		//AjaxQueue._processNext; 
		inCall = false;

	}
});*/

var queueWatcher = setInterval(AjaxQueue._processNext, 100);