onClick checkbox to show and hide a div area not working when div content is large

I been Following the question  http://www.experts-exchange.com/Programming/Languages/Scripting/JavaScript/Q_21395578.html and implemented the code in struts2 jsp page.
But the code seems to be not working ..

the div contents will be generated on the fly

Please somebody help
code is as follows
 
<script>
function comm_direct_change(checked){
     document.getElementById('direct').style.display = checked?"block":"none";
}
</script>
 
  <s:checkbox label="Symptoms" name="check1" onclick="comm_direct_change(this.checked)" />
                          <div id="sym" style="display: none;" >    <display:column property="symptoms" title="Symptoms" sortable="true" maxLength="40" style="font-family: Arial;width:100px"/>  </div>

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pothireddysunilAsked:
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David H.H.LeeCommented:
Hi pothireddysunil,
>>..But the code seems to be not working ..
Do you refer correct control's ID? Should refer "sym" instead of "direct" based on the existing code here.
eg:

function comm_direct_change(checked){
     document.getElementById('sym').style.display = checked?"block":"none";
}
0

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pothireddysunilAuthor Commented:
sorry ,i have the correct Id specified...but still does'nt work.
Is there any size limit condidered for this.Also i'm trying on jsp ...will it be different.I ran some samples in html they work fine...but i fail when i run this with jsp in the above case
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David H.H.LeeCommented:
Hi pothireddysunil,
>>..but still does'nt work.
Any error return?

>>..Is there any size limit condidered for this.
what is the size limit that you're referring here? Do you meant the <Div>'s content?

>>..I ran some samples in html they work fine...but i fail when i run this with jsp in the above case
I'm not really familiar with JSP. Probably some other event is stopping that hiding <Div> behavior on your existing flow?
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