[jQuery] Back or Continue Solution to UI Tabs and Jquery Form

[jQuery] Back or Continue Solution to UI Tabs and Jquery Form

Hi Folks
I did this with ajax tab options and Jquery Form
$(document).ready(function() {
    $("#myForm").ajaxForm( function() {
       $("#tabs").tabs("select",2);
    });
});
Inside of my tab 1 have
<input type="submit" id="back" class="click" value="« Back" name="back"/>
<input type="submit" id="continue" class="click" value="Continue »" name="continue"/>
As you can see if I submit #myForm I will go to next tab $("#tabs").tabs("select",2);
But to back I am having problems. Because is a second submit button. So I am trying this:
$(document).ready(function() {
$(".click").click(function(){
  //Get the id of this clicked item
  x = <a href="http://this.id/" target="_blank">this.id</a>;
});
  // before submit, call BackOrContinue
  var options = {
    beforeSubmit:  BackOrContinue
  };
  $("#myform").ajaxForm(options)<div id=":2md" class="ArwC7c ckChnd">;
  function BackOrContinue {
  
    if (x == "back") {
      $("#tabs").tabs("select",0);
    } else {
      $("#tabs").tabs("select",2);
    }
  }
});
My error is $ is not defined
I tried
  $("#myForm").ajaxForm( function() {
        x = <a href="http://this.id/" target="_blank">this.id</a>;
    alert(x);
      if (x == "back") {
          $("#tabs").tabs("select",0);
        } else {
          $("#tabs").tabs("select",2);
        }
   });
and x = "undefined"
What is missing?
Regards
macm</div>