(function () {
    var whiteColor = {red: 255, green: 255, blue: 255};
    var greyColor = {red: 125, green: 125, blue: 125};
    this.preload = function(entityID) {
        Entities.editEntity(entityID, {color: "transparent"});
    };
    this.hoverEnterEntity = function(entityID) {
        Entities.editEntity(entityID, {color: greyColor});
    };
    this.hoverLeaveEntity = function(entityID) {
        Entities.editEntity(entityID, {color: "transparent"});
    };
    this.mousePressOnEntity = function(entityID) {
        location.goToLastAddress();
    };
});