title: jquery position().left is not working correctly
body: <p>my code is</p>
  
  <pre><code>&lt;HTML&gt;
  &lt;HEAD&gt;
  &lt;TITLE&gt; New Document &lt;/TITLE&gt;
  &lt;meta http-equiv="Content-Type" content="text/html;charset=utf-8"&gt;
  &lt;script type="text/javascript" src="jquery1.6.4.js"&gt;&lt;/script&gt;
  &lt;script&gt;
  $(document).ready(function(){
  
  //Slide Test
  
  $("#szSliderContainer").css({"width":"1200px","height":"200px","position":"relative","overflow":"hidden"});
  var szSliderMoveSet = $("#szSliderMoveSet").css({"width":"600px","height":"100px","position":"relative"});
  
  function szSlide(){
  
      console.log("left-chk1 : " + szSliderMoveSet.position().left);
      var left1 = szSliderMoveSet.position().left - 100;
  
      if(left1 &lt;= -600){
          szSliderMoveSet.css({"left":"600px"});
      }
  
      console.log("left-chk2 : " + szSliderMoveSet.position().left);
      szSliderMoveSet.delay(500).animate({'left':left1},500,szSlide);
  
  }
  
  szSlide();
  
  });
  
  &lt;/script&gt;
  &lt;/HEAD&gt;
  
  &lt;BODY&gt;
  &lt;div id="szSliderContainer"&gt;
  &lt;div id="szSliderMoveSet"&gt;
  &lt;table width="400" cellpadding="0" cellspacing="0"&gt;
  &lt;tr&gt;
  &lt;td&gt;&lt;img src="img/img1.jpg" width="100" height="100"/&gt;&lt;/td&gt;
  &lt;td&gt;&lt;img src="img/img2.jpg" width="100" height="100"/&gt;&lt;/td&gt;
  &lt;td&gt;&lt;img src="img/img3.jpg" width="100" height="100"/&gt;&lt;/td&gt;
  &lt;td&gt;&lt;img src="img/img4.jpg" width="100" height="100"/&gt;&lt;/td&gt;
  &lt;td&gt;&lt;img src="img/img5.jpg" width="100" height="100"/&gt;&lt;/td&gt;
  &lt;td&gt;&lt;img src="img/img6.jpg" width="100" height="100"/&gt;&lt;/td&gt;
  &lt;/tr&gt;
  &lt;/table&gt;
  &lt;/div&gt;
  &lt;/div&gt;
  &lt;/BODY&gt;
  &lt;/HTML&gt;
  </code></pre>
  
  <p>when  szSliderMoveSet Div  's left position is  -600 ,  I expect  that  szSliderMoveSet Div's left position  is  600  and then
  left position is decrease -100 (500, 400, 300 ....)</p>
  
  <p>but.. do not work as expected</p>
  
  <p>console output is:</p>
  
  <pre><code>left-chk1 : 0 
  left-chk2 : 0 
  left-chk1 : -100 
  left-chk2 : -100 
  left-chk1 : -200 
  left-chk2 : -200 
  left-chk1 : -300 
  left-chk2 : -300 
  left-chk1 : -400 
  left-chk2 : -400 
  left-chk1 : -500 
  left-chk2 : 600 
  left-chk1 : -600 
  left-chk2 : 600 
  left-chk1 : -700 
  left-chk2 : 600 
  left-chk1 : -800 
  left-chk2 : 600 
  left-chk1 : -900 
  left-chk2 : 600 
  left-chk1 : -1000 
  left-chk2 : 600 
  left-chk1 : -1100 
  left-chk2 : 600 
  left-chk1 : -1200 
  </code></pre>
  
  <p><code>left-chk1</code> is decreased repeatedly.</p>
  
  <p>Please help me ~ </p>