[andreydial]

google.maps.event.addListener(map, 'click', function()
	{
  		infowindow.close();
		});
	setMarkers(1);	// вывод на карту маркеров в кластерах (Zork_libs.js)

	$("#find_bootton").attr("disabled",false);
	$("#select_cat").attr("disabled",false);
	
	$('#pic').customFileInput('Upload Pic');
}

function showAddress(address) {
	geocoder = new google.maps.Geocoder();
	geocoder.geocode( {'address': address}, function(results, status)
	{
		if (status == google.maps.GeocoderStatus.OK)
		{//yourKML.setMap(null);
				var lat = results[0].geometry.location.lat();
				var lon = results[0].geometry.location.lng();
				document.getElementById("lat").value = lat;
				document.getElementById("lng").value = lon;
				var location = new google.maps.LatLng(lat,lon);

				corrent_str=1;
				getNewPage(lat,lon,address);
				alert("Location found. Please continue.");		
		}else
			{
				alert("No results have been found. Please enter a different criteria.");
				$("#lat").val(""); $("#lng").val("");
			}
	});
}

Часть скрипта

$("#find_bootton").attr("disabled",false);

Разве не здесь проверяется нажатие кнопки?