var currentIcon = new GIcon();
currentIcon.image = "http://labs.google.com/ridefinder/images/mm_20_yellow.png";
currentIcon.shadow = "http://labs.google.com/ridefinder/images/mm_20_shadow.png";
currentIcon.iconSize = new GSize(12, 20);
currentIcon.shadowSize = new GSize(22, 20);
currentIcon.iconAnchor = new GPoint(6, 20);
currentIcon.infoWindowAnchor = new GPoint(5, 1);

var visitedIcon = new GIcon();
visitedIcon.image = "http://labs.google.com/ridefinder/images/mm_20_white.png";
visitedIcon.shadow = "http://labs.google.com/ridefinder/images/mm_20_shadow.png";
visitedIcon.iconSize = new GSize(12, 20);
visitedIcon.shadowSize = new GSize(22, 20);
visitedIcon.iconAnchor = new GPoint(6, 20);
visitedIcon.infoWindowAnchor = new GPoint(5, 1);

var futureIcon = new GIcon();
futureIcon.image = "http://labs.google.com/ridefinder/images/mm_20_gray.png";
futureIcon.shadow = "http://labs.google.com/ridefinder/images/mm_20_shadow.png";
futureIcon.iconSize = new GSize(12, 20);
futureIcon.shadowSize = new GSize(22, 20);
futureIcon.iconAnchor = new GPoint(6, 20);
futureIcon.infoWindowAnchor = new GPoint(5, 1);

var currentNotExactIcon = currentIcon;
var notExactIcon = visitedIcon;