function ajaxObject(layer, url) {                                    // This is the object constructor
	var that=this;                                                    // A workaround for some javascript idiosyncrocies
	var updating = false;                                             // Set to true if this object is already working on a request
	this.callback = function() {}                                     // A post-processing call -- a stub you overwrite.
	this.update = function(passData) {                                // Initiates the server call.
		if (updating==true) { return false; }                          // Abort if we're already processing a call.
		updating=true;                                                 // Set the updating flag.
   		var AJAX = null;                                               // Initialize the AJAX variable.
  		if (window.XMLHttpRequest) {                                   // Are we working with mozilla?
   			AJAX=new XMLHttpRequest();                                  //  Yes -- this is mozilla.
   		} else {                                                       // Not Mozilla, must be IE
   		    AJAX=new ActiveXObject("Microsoft.XMLHTTP");                //  Wheee, ActiveX, how do we format c: again? 
   		}                                                              // End setup Ajax.
   		if (AJAX==null) {                                              // If we couldn't initialize Ajax...
   		    alert("Your browser doesn't support AJAX.");                // Sorry msg.
    	    return false                                                // Return false (WARNING - SAME AS ALREADY PROCESSING!)
   		} else {
   		    AJAX.onreadystatechange = function() {                      // When the browser has the request info..
    	    	if (AJAX.readyState==4 || AJAX.readyState=="complete") { //   see if the complete flag is set.
    	    		LayerID.innerHTML=AJAX.responseText;                  //   It is, so put the new data in the object's layer 
    			    delete AJAX;                                          //   delete the AJAX object since it's done.
    	    	    updating=false;                                       //   Set the updating flag to false so we can do a new request
    	    	    that.callback();                                      //   Call the post-processing function.   
    	    	}                                                        // End Ajax readystate check. 
   			}                                                           // End create post-process fucntion block.
   			var timestamp = new Date();                                 // Get a new date (this will make the url unique) 
   			var uri=urlCall+'?'+passData+'&timestamp='+(timestamp*1);   // Append date to url (so the browser doesn't cache the call)
   			AJAX.open("GET", uri, true);                                // Open the url this object was set-up with.  
   			AJAX.send(null);                                            // Send the request.
   			return true;                                                // Everything went a-ok.    
		}
	}         // This area set up on constructor calls.
   var LayerID = document.getElementById(layer);                     // Remember the layer associated with this object.
   var urlCall = url;                                                // Remember the url associated with this object.
}                                                                    // End AjaxObject