var classes = ["dijitClosed", "dijitOpen"];
var boolIndex = this.open;
var node = this.titleBarNode||this.focusNode
dojo.removeClass(node, classes[!boolIndex+0]);
node.className += " " + classes[boolIndex+0];
// provide a character based indicator for images-off modethis.arrowNodeInner.innerHTML = this.open ? "-" : "+";