offsetHeight and offsetWidth not working in IE and Mozilla both

[dmjpro]

HTML code

<div id="dtls_DIV" style="background-color:#CCCCCC;border-style:solid;border-width:1px;border-color:#000000;display:none;position:absolute;height:180px;width:230px;overflow:auto">
    <table id="dtls_TAB" border=0 cellpadding="2" cellspacing="2" width=100%>
        <tr>
            <td nowrap id="dtls_TD" class="searchbgcolor" style="background-color:#DDEEEE">Not Available<BR/></td>
            <td align="right" valign="top"><input type=button class=button value="X" onclick="document.getElementById('dtls_DIV').style.display='none';" title="close the window"/></td>
        </tr>
    </table>
</div>

Javascript Code

function showList(value,obj){
    alert(value);
    var pos = findPos(obj);
    var left = pos[0], top = pos[1];
    var div_ref = document.getElementById('dtls_DIV');
    if(value!='') document.getElementById('dtls_TD').innerHTML = value;
    else document.getElementById('dtls_TD').innerHTML = 'Not Available</BR>';
    div_ref.style.left = left+'px';
    div_ref.style.top = top+'px';
    var dtls_TAB = document.getElementById('dtls_TAB');
    div_ref.style.height = (dtls_TAB.offsetHeight+10)+'px';
    div_ref.style.width = (dtls_TAB.offsetWidth+10)+'px';
    div_ref.style.display = 'block';
}

On first click(method call) it's not working on 2nd click(method call) it's working.
Why it's happening .....

[Dormilich]

how are these two codes related? the Javascript is not triggered as far as I see.

[dmjpro]

When onClick event fires from any element then it happens.
Actually i thought no matter from where the method called, that's why i didn't post the calling of method ;)

Actually what's happening ... offsetHeight and offsetWidth returns zero... :(

[mrhoo]

It looks like you are trying to get the offset size of an element whose style.display is 'none'.

offsets are figured from the rendered size of an element- the space it takes up in the browser window. If the display is none, it has no offset size, or 0.

[dmjpro]

Ah..aah...I see ..Thanks for your reply ;)