https://www.br.de/wetter/javascript/openlayer/HtmlMarker.js?c=5.11.6--

1OpenLayers.Marker.Html=OpenLayers.Class(OpenLayers.Marker.Box,{
2
3    initialize: function(lonlat, content, borderColor, borderWidth, backgroundColor) {
4
5        borderColor = borderColor?borderColor:"transparent";
6        borderWidth = borderWidth?borderWidth:0;
7
8        OpenLayers.Marker.Box.prototype.initialize.apply(this, [
9            new OpenLayers.Bounds(lonlat.lon, lonlat.lat, lonlat.lon, lonlat.lat),
10            borderColor, borderWidth]);
11        this.setContent(content);
12        this.div.style.width='auto';
13        this.div.style.height='auto';
14        this.div.style.backgroundColor=backgroundColor?backgroundColor:"transparent";
15    },
16
17    setContent: function (content) {
18
19        this.div.innerHTML=content+'';
20        this.display(!!content);
21    },
22
23    draw: function(px,sz){
24
25        var pxl = new OpenLayers.Pixel(px.x-(60/2),px.y-59);
26        OpenLayers.Util.modifyDOMElement (this.div,null,pxl);
27        return this.div;
28    },
29
30    CLASS_NAME: "OpenLayers.Marker.Html"
31});