[OpenLayers-Users] changing style of layer using radiobutton

[vrbikdan]

Hi,
I'm trying to create map, where user could change style of polygon layer via
radiobutton. I wrote some rules for this and function, which should change
property and value in these rules. But it doesn't cause rules are in init
function and my function is onclick on radiobutton. So how I can allow user
to change style of layer via radiobutton? Part of my code is below, whole
code is here: http://vrbikdan.xf.cz/avon/avon.html
http://vrbikdan.xf.cz/avon/avon.html 

Thanks a lot,
Dan

zonyPrijem = new Array(10500, 11500, 12500, 17000);
zonyPopulace = new Array(200000, 250000, 300000, 350000);
zonyLady = new Array(1400, 1800, 2200, 2400);

polozkazonyPrijem = "prijem";
polozkazonyPopulace = "populace";
polozkazonyLady = "avonlady";
			
hranice = zonyPrijem;
polozka = polozkazonyPrijem;

function tematika (){
	if(document.forms.seznamVrstev.zonyAvon[0].checked)
	{
	hranice = zonyPrijem;
	polozka = polozkazonyPrijem;
	avonZony_layer.redraw();
	}
	else if(document.forms.seznamVrstev.zonyAvon[1].checked)
	{
	hranice = zonyPopulace;
	polozka = polozkazonyPopulace;
	avonZony_layer.redraw();
	}
	else if(document.forms.seznamVrstev.zonyAvon[2].checked)
	{
	hranice = zonyLady;
	polozka = polozkazonyLady;
	avonZony_layer.redraw();
	}
}

function init(){
            map = new OpenLayers.Map('mapa',{
				
                    controls: [
						new OpenLayers.Control.Navigation(),
						new OpenLayers.Control.PanPanel(),
						new OpenLayers.Control.ZoomPanel(),
                        new OpenLayers.Control.ScaleLine(),
                        new OpenLayers.Control.KeyboardDefaults()
                    ]});

                        style = new OpenLayers.Style();

			rule1 = new OpenLayers.Rule({
				filter: new OpenLayers.Filter.Comparison({
				type: OpenLayers.Filter.Comparison.LESS_THAN,
				property: polozka,
				value: hranice[0]
				}),
				symbolizer: {fillColor: "#ccFF00",
				fillOpacity: pruhlednost, strokeColor: "black"}
				});
			
			rule2 = new OpenLayers.Rule({
				filter: new OpenLayers.Filter.Comparison({
				type: OpenLayers.Filter.Comparison.BETWEEN,
				property: polozka,
				lowerBoundary: hranice[0]+=1,
                upperBoundary: hranice[1]
				}),
				symbolizer: {fillColor: "#CCCC00",
				fillOpacity: pruhlednost, strokeColor: "black"}
				});
			
			rule3 = new OpenLayers.Rule({
				filter: new OpenLayers.Filter.Comparison({
				type: OpenLayers.Filter.Comparison.BETWEEN,
				property: polozka,
				lowerBoundary: hranice[1]+=1,
                upperBoundary: hranice[2]
				}),
				symbolizer: {fillColor: "#CC9900",
				fillOpacity: pruhlednost, strokeColor: "black"}
				});
			
			rule4 = new OpenLayers.Rule({
				filter: new OpenLayers.Filter.Comparison({
				type: OpenLayers.Filter.Comparison.BETWEEN,
				property: polozka,
				lowerBoundary: hranice[2]+=1,
                upperBoundary: hranice[3]
				}),
				symbolizer: {fillColor: "#CC6600",
				fillOpacity: pruhlednost, strokeColor: "black"}
				});
			
			rule5 = new OpenLayers.Rule({
				filter: new OpenLayers.Filter.Comparison({
				type: OpenLayers.Filter.Comparison.GREATER_THAN,
				property: polozka,
				value: hranice[3]
				}),
				symbolizer: {fillColor: "#CC3300",
				fillOpacity: pruhlednost, strokeColor: "black"}
				});

				style.addRules([rule1, rule2, rule3, rule4, rule5]);

styleAvon = new OpenLayers.StyleMap({'default': style, 'select':
selectStyle});

			avonZony_layer = new OpenLayers.Layer.Vector("KML", {
									protocol: new
OpenLayers.Protocol.HTTP({url:"avonVrstvy/avon_zony.kml", 
																			format: new OpenLayers.Format.KML()}), 
									strategies: [new OpenLayers.Strategy.Fixed()],
									styleMap: styleAvon
									});
}

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