You can use Element.getStyle() in later versions of prototype.js
<http://www.sergiopereira.com/articles/prototype.js.html>.
Best
Matt
> -----Original Message-----
> From:
rails-spinoffs-bounces-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
>
[mailto:rails-spinoffs-bounces-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org]
On
> Behalf Of Nicolas Terray
> Sent: 16 February 2006 09:59
> To: rails-spinoffs-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
> Subject: [Rails-spinoffs] Re: Retrieve a property defined in a css
>
>
> On 2/16/06, Nicolas Terray
<nicolas.terray-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > Hi all,
> >
> > I have a property, defined in an external stylesheet:
> >
> > .my_class {
> > background-color: #FF0000;
> > }
> >
> >
> > I want to retrieve the value of this background-color of the class
> > my_class.
> >
> > How can I do that with prototype/scriptaculous ?
> >
> > Thanks in advance,
> > Nicolas Terray
> >
>
> I''ve just found this script:
> ---8<---------
> function getStyleClass (className) {
> var re = new RegExp("\\." + className + "$",
"gi");
> if (document.all) {
> for (var s = 0; s < document.styleSheets.length; s++)
> for (var r = 0; r < document.styleSheets[s].rules.length; r++)
> if (document.styleSheets[s].rules[r].selectorText.search(re)
> != -1) {
> return document.styleSheets[s].rules[r].style;
> }
> }
> else if (document.getElementById) {
> for (var s = 0; s < document.styleSheets.length; s++)
> for (var r = 0; r <
> document.styleSheets[s].cssRules.length; r++)
> if (document.styleSheets[s].cssRules[r].selectorText.search
> (re) != -1) {
> document.styleSheets[s].cssRules[r].sheetIndex = s;
> document.styleSheets[s].cssRules[r].ruleIndex = s;
> return document.styleSheets[s].cssRules[r].style;
> }
> }
> else if (document.layers)
> return document.classes[className].all;
> return null;
> }
> function getStyleClassProperty (className, propertyName) {
> var styleClass = getStyleClass(className);
> if (styleClass)
> return styleClass[propertyName];
> else
> return null;
> }
> ---8<---------
> http://www.faqts.com/knowledge_base/view.phtml/aid/1939/fid/255
>
> It works pretty find on Fx 1.0.7 and IE6 however I don''t
> understand all in this script. What does those lines mean :
> document.styleSheets[s].cssRules[r].sheetIndex = s;
> document.styleSheets[s].cssRules[r].ruleIndex = s; ???
>
> As javascript experts, could you tell me if this script is
> correct, not too old and unoptimizable ?
>
> Anyways, other suggestions are welcome!
>
> Thanks,
> Nicolas Terray
> _______________________________________________
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>
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