How do I know the width of an element through javascript?

There is a div defined field sizes. It is a text (in each case is different). A maximum size (size) of the text.
Question: how to define the width of the text to dynamically reduce the size if it got the edges? If the current tag div invest another, but does not assign importance to the method

Code:

Quote:

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var q = document.getElementById ( 'qwerty');
alert (q.currentStyle.width);

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you can try with q.clientWidth

in IE returns the width of the previous element, if it is determined, or the width of the screen if the width of the previous element is not defined ... when viewing the properties of such a code

Code:

Quote:

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function ShowProperties () (
var result;
var objName = "qwerty";
var q = document.getElementById ( "qwerty")
for (var i in q) result + = objName + "." + I + "=" + q [i] + "<br /> \ n";

document.all.item ( "result"). innerHTML = result;
)

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I have not noticed any contains that the current width and can be any circuit to know the width of the text

and you do so - and will become evident why

Code:

Quote:

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<div id='test' style='border: 1px solid black'> Some text here </ div>

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then both

Code:

Quote:

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<span id='test' style='border: 1px solid black'> Some text here </ span>
<script>
alert (document.getElementById ( 'test'). offsetWidth)
</ script>

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