Problem display field

[pho01]

I'm designing a fieldset to display/not display barchart by clicking on a button. Would someone tell me what is missing here, when i click on the button, it said "object expected". I can't see what is missing!

<SCRIPT language="javascript">
function drawChart()
{
var chart = document.form.getElementsByTagName("fieldset");
chart.style.display = "inline";
}
</SCRIPT>


<form method="POST" action="someaction" name="Form" >

<!--...-->


<td><input type=button name="sub1" value="Get Data" onclick="drawChart()"></td>

<fieldset id="chart1" style="display:none">
<!--
html contains table and chart
-->
</fieldset>


How would you debug javascript embedded into html?
Thanks!

 

[trollacious]

Try treating the chart variable you get with document.getElementsByTagName() as an array, then loop through the array and process each element in the array individually.

Lee