function ajaxFunction() {
	
		var ajaxRequest = false;
		try {
			//Firefox, Opera, Safari
			ajaxRequest=new XMLHttpRequest();
		}
			catch(e)
			{
				try {
					//IE
					ajaxRequest=new ActiveXObject("Msxml2.XMLHTTP");
				}
					catch(e)
					{
						try{
						ajaxRequest=new ActiveXObject("Microsoft.XMLHTTP");
						}
					catch(e)
					{
						alert("Your browser does not support AJAX!");
						return false;
					}
					}
			}
			
			//receive data sent from server
			ajaxRequest.onreadystatechange = function(){
				if(ajaxRequest.readyState == 4){
					
					var ajaxDisplay = document.getElementById('park_results');
					ajaxDisplay.innerHTML = ajaxRequest.responseText;
					
				}
			}
			
			//EVENT TYPE
			var form = document.forms["parks_form"];
			var all_amenities = 0;
			var pavillion = 0;
			var picnic = 0;
			var bbq = 0;
			var amphitheater = 0;
			var restroom = 0;
			var parking = 0;
			var soccer = 0;
			var playground = 0;
			var vball = 0;
			var bball = 0;
			var tennis = 0;
			var horse = 0;
			var softball = 0;
			var grass = 0;
			var climb = 0;
			var walking = 0;
			var pickleball = 0;
			var trail = 0;
			var fish = 0;
			var reservable = 0;
			var splash = 0;
			var dog = 0;
			var wifi = 0;
			var searched_for = '';
			
			if(form.all_amenities.checked){ all_amenities = 1; }
			if(form.restroom.checked){ restroom = 1; searched_for += "Restrooms, "; }
			if(form.pavillion.checked){ pavillion = 1; searched_for += "Covered Pavilion, "; }
			if(form.picnic.checked){ picnic = 1; searched_for += "Picnic Tables, "; }
			if(form.bbq.checked){ bbq = 1; searched_for += "BBQ, "; }
			if(form.amphitheater.checked){ amphitheater = 1; searched_for += "Amphitheater, "; }
			
			if(form.parking.checked){ parking = 1; searched_for += "Parking, "; }
			if(form.soccer.checked){ soccer = 1; searched_for += "Soccer Field, "; }
			if(form.playground.checked){ playground = 1; searched_for += "Playground, "; }
			if(form.vball.checked){ vball = 1; searched_for += "Volleyball, "; }
			if(form.bball.checked){ bball = 1; searched_for += "Basketball, "; }
			if(form.tennis.checked){ tennis = 1; searched_for += "Tennis, "; }
			if(form.horse.checked){ horse = 1; searched_for += "Horse Shoe Pits, "; }
			if(form.softball.checked){ softball = 1; searched_for += "Softball, "; }
			if(form.grass.checked){ grass = 1; searched_for += "Open Grass Area, "; }
			if(form.climb.checked){ climb = 1; searched_for += "Climbing Wall, "; }
			if(form.walking.checked){ walking = 1; searched_for += "Walking Path, "; }
			if(form.pickleball.checked){ pickleball = 1; searched_for += "pickleball, "; }
			if(form.trail.checked){ trail = 1; searched_for += "Trail Head, "; }
			if(form.fish.checked){ fish = 1; searched_for += "Fishing, "; }
			if(form.reservable.checked){ reservable = 1; searched_for += "Reservable, "; }
			if(form.splash.checked){ splash = 1; searched_for += "Splash Pad, "; }
			if(form.dog.checked){ dog = 1; searched_for += "Dog Park, "; }
			if(form.wifi.checked){ wifi = 1; searched_for += "WiFi, "; }
			
			//PARK TYPE
			var p_type = "";
			for(i = 0; i < form.p_type.length; i++){
				if(form.p_type[i].checked == true){
					p_type = form.p_type[i].value;	
				}
			}
						
			ajaxRequest.open("GET", "get_parks.php?c=" + new Date().getTime() + "&all_amenities=" + all_amenities + "&pavillion=" + pavillion + "&picnic=" + picnic + "&bbq=" + bbq + "&amphitheater=" + amphitheater + "&restroom=" + restroom + "&parking=" + parking + "&soccer=" + soccer + "&playground=" + playground + "&vball=" + vball + "&bball=" + bball + "&tennis=" + tennis + "&horse=" + horse + "&softball=" + softball + "&grass=" + grass + "&climb=" + climb + "&walking=" + walking + "&pickleball=" + pickleball + "&trail=" + trail + "&fish=" + fish + "&reservable=" + reservable + "&splash=" + splash + "&dog=" + dog + "&wifi=" + wifi + "&type=" + p_type + "&searched_for= " + searched_for, true);
			ajaxRequest.send(null);
	
	}//end ajaxFunction