$(document).ready( function()
{
  
    $("input#send").hover(
      function () {
            $(this).css({'background-image' : 'url(img/forms/submit_button_hover.png)'});  
            $(this).css({'cursor' : 'pointer'});
      }, 
      function () {
            $(this).css({'background-image' : 'url(img/forms/submit_button.png)'});   
            $(this).css({'cursor' : 'pointer'});
      }
    );    
    
});