What to do!?! Stay calm, get out of the pool as quickly as you can, take your cell phone out of your pocket and immediately remove the battery. If you cannot get out of the pool in less than 30 seconds, then remove the battery from the phone while you are still underwater. This is because as the water seeps into your phone, it can short out many of the electronic connections in the phone if there is still electricity running through the phone. If your phone has a SIM card, remove that after you remove the battery. SIM cards can survive being wet, but don’t use any heat sources to dry it. Just place it on a paper towel and let it air-dry.
As well there are online services that allow you to use their software to develop a mobile web page. Most of them are hosted on their servers and to access them on mobile you must enter the URL they give you. This may not be to your liking especially if you like to have control and have visitors to your web site have access to pages that are hosted on your site.