canvas marker

gistfile1.js

        renderMarkers: function(w,h,error){
            var cnvs = $("<canvas width="+w+" height="+h+">");
            var ctx = cnvs[0].getContext("2d");
            ctx.drawImage(this.pmBackground, 0, 0, w, h);
            if (this.type){
                ctx.drawImage(this.pmType, 0, 0, w, h);
            }
            if (error){
                ctx.drawImage(this.pmError, 0, 0, w, h);
            }
            ctx.drawImage(this.pmForeground, 0, 0, w, h);
            var dataURL = cnvs[0].toDataURL("image/png");
            return dataURL;
        },