$(document).ready(function(){
   $("#search_text").width(43);

   var search_text_value = $("#search_text").val();

if (search_text_value != '') {
     $("#search_text").width(120);
    }

   $("#search_text").focus(function(){
       $(this).animate( { width:"120px"}, 1000 );
    });

  $("#search_text").blur(function(){
       $(this).animate({opacity: 1.0}, 3000)
       $(this).animate({width:"43px"});
    });
});