[OpenLayers-Users] how to style vector layer points from values of GeoRSS tag?

[fabiowebby]

Hi All,
I'm using OpenLayers to show some data related to my dissertation project. I
have some earthquakes data(lat,long,magnitude etc...) in Mysql database and
I generate a GeoRSS file using a php script which is read by OpenLayers. The
GeoRSS file structure is as following:

<item>
<title>Earthquake Magnitude:3</title>
<description>Earthquake M3 on 1971-01-03 at 21:42:52</description>
<pubDate>1971-01-03</pubDate>
<magnitude>3</magnitude>
<geo:lat>51.25</geo:lat>
<geo:long>-179.3</geo:long>
</item>

The GeoRSS file is read perfectly by OpenLayers and I am able to show point
on the map using the following code on a google layer:

var earthquakes = new OpenLayers.Layer.Vector("Earthquakes", {
    strategies: [new OpenLayers.Strategy.Fixed()],
    protocol: new OpenLayers.Protocol.HTTP({
        url: "files/test.xml",
        format: new OpenLayers.Format.GeoRSS()
    })
});

Now it comes the step where I am stuck with. At this point I need to give
some style to these points and more specifically the style should be based
on the value from the magnitude tag in the GeoRSS file. That is, minor
earthquakes should appear in green and small in radius, medium in yellow and
larger radius and violent earthquakes should be red and radius bigger than
the others. I have tried to follow the flickr example but unfortunately my
javascript knowledge is very little and I was not able to understand it but
I guess it is something very similar syntactically. Could someone please
help me with this or at least point me to the right direction? I'd
appreciate it very much.
Thank you very much in advance 
Regards 
Fabio
 

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