gistfile1.js

var ci_styles = new OpenLayers.StyleMap({
	"default": new OpenLayers.Style({
		pointRadius: "10", // sized according to type attribute
		fillColor: "${fcolor}",
		strokeColor: "${scolor}",
		strokeWidth: 2,
		graphicZIndex: 1
	},
	{
		context:
		{
			fcolor: function(feature)
			{
				
			},
			scolor: function(feature)
			{
				
			},
		}
	}),
	"select": new OpenLayers.Style({
		fillColor: "#66ccff",
		strokeColor: "#3399ff",
		graphicZIndex: 2
	})
});


var checkinLayer = new OpenLayers.Layer.Vector('Checkins', {styleMap: ci_styles});
map.addLayers([checkinLayer]);
var checkinPoint = new OpenLayers.Feature.Vector(new OpenLayers.Geometry.Point(parseFloat(Lon), parseFloat(Lat)));
checkinLayer.addFeatures([checkinPoint]);