$(document).ready(function(){
   //
 });

 function validate(){

    var valid = true;

    //check required fields
    $("#f input.required").each(function(){
       if($(this).val()==""){
           valid = false;
       }
   });

   if(!valid){
       alert("Please make sure all valid fields are completed");
       return false;
   }

   return true;

 }