Being very new to OpenLayers I finally figured out how to add a control
button to the map. I still have to figure out how to get the indices of the
layers using the layer names rather than hard coding them.
//Refresh Map control
var refreshcon = new OpenLayers.Control.Button({title: "Refreshes the
Biomass Sites.", displayClass: "olControlRefreshMap", trigger:
myRefreshMap});
function myRefreshMap(){
if( isBiomass ) {
map.layers[2].redraw(true);
map.layers[3].redraw(true);
}
}
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