jquery写的slideLeft，slideRight

 "text/javascript" src="jquery.1.2.6.js">
 "text/javascript">
     jQuery.fn.slideLeftHide = function( speed, callback ) {
         this.animate({
             width : "hide",
             paddingLeft : "hide",
             paddingRight : "hide",
             marginLeft : "hide",
             marginRight : "hide"
         }, speed, callback );
     };
     jQuery.fn.slideLeftShow = function( speed, callback ) {
         this.animate({
             width : "show",
             paddingLeft : "show",
             paddingRight : "show",
             marginLeft : "show",
             marginRight : "show"
         }, speed, callback );
     };

 "text/javascript">
     $(function() {
         $(".title_bar").slideLeftHide(4000);
         $(".title_bar").slideLeftShow(4000);
     });






     class="title_bar">
     "recruitment.png" border="0"
              />