SO fiddle

Test Fiddle mainly for SO Questions

by Nick Craver

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/overcast/jquery-ui.css">
<div id="menu">
ABCXTZ
</div>

CSS

#menu{
color :red;
}

JavaScript

var a = document.getElementById('menu');
if(document.defaultView && document.defaultView.getComputedStyle) {
    alert(document.defaultView.getComputedStyle(a, null).getPropertyValue("color"));
} else if(a.currentStyle) {
    alert(a.currentStyle.color);
}