//This JavaScript modified from this Tutorial.
 //AJAX Form POST/GET - HTML Form Submit with AJAX/Javascript Example/Tutorial 
 //http://www.captain.at/howto-ajax-form-post-get.php

var http_request = new Array();
var handled = new Array();
var theAds = new Array();

   function makeRequest(url, parameters, num) {
      //http_request = false;
      
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request[num] = new XMLHttpRequest();
         if (http_request[num].overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request[num].overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request[num] = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request[num] = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request[num]) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      http_request[num].onreadystatechange = alertContents;
      http_request[num].open('GET', url + parameters, true);
      http_request[num].send(null);
   }

   function alertContents() {
   
     	var nr = -1;
     	var result;
	    for (var i = 0; i < 6; ++i) 
			{				
		        if ((handled[i] != true) && http_request[i] && (http_request[i].readyState == 4) && (http_request[i].status == 200)) 
					  {
			            nr = i;
			            
			            break;
			      }
		    }
	    if (nr != -1) 
			{
       // if (http_request.readyState == 4) {
       //  if (http_request.status == 200) {
            //alert(http_request.responseText);
            
            var pos;
            
            result = http_request[i].responseText;
			      handled[nr] = true;
            
            if (nr == 0){            
                pos = result.indexOf("a");
                if (pos >=0) document.getElementById('slick').innerHTML = result;
                else  document.getElementById('slick').innerHTML = "";
            }
            
            if (nr == 1){
                pos = result.indexOf("a");
                if (pos >=0) document.getElementById('detective').innerHTML = result;
                else  document.getElementById('detective').innerHTML = "";
            }
            
            if (nr == 2){
                pos = result.indexOf("a");
                if (pos >=0) document.getElementById('woot').innerHTML = result;
                else  document.getElementById('woot').innerHTML = "";
            }
            
            if (nr == 3){
                pos = result.indexOf("a");
                if (pos >=0) document.getElementById('guns').innerHTML = result;
                else  document.getElementById('guns').innerHTML = "";
            }
            	
                      
         } else {
            //alert('There was a problem with the request.');
         }
      
   }
   
   function get(days) {
    
      theAds[0] = "?ad=slick&days="+days;
      theAds[1] = "?ad=detective&days="+days;
      theAds[2] = "?ad=woot&days="+days;
      theAds[3] = "?ad=guns&days="+days;
      
      document.getElementById('slick').innerHTML = "";
      document.getElementById('detective').innerHTML = "";
      document.getElementById('woot').innerHTML = "";
      document.getElementById('guns').innerHTML = "";
           
      document.getElementById('slick').innerHTML = "<img src=images/animatedCircle.gif>";          
      document.getElementById('detective').innerHTML = "<img src=images/animatedCircle.gif>";
      document.getElementById('woot').innerHTML = "<img src=images/animatedCircle.gif>";
      document.getElementById('guns').innerHTML = "<img src=images/animatedCircle.gif>";
  
    	for (var i = 0; i < 4; i++) 
    	{
    	          handled[i] = false;
    	          http_request[i] = false;    	                          					         				
        	      makeRequest('http://www.dimetosave.com/fetchAd.php', theAds[i], i);
    	}
      
   }