Sets or retrieves the tooltip text. All AW controls display the tooltip text.
var value = obj.getControlTooltip();
obj.setControlTooltip(value);
obj.onControlTooltipChanging = function(value){...};
obj.onControlTooltipChanged = function(value){...};
obj.onControlTooltipError = function(value){...};
var obj = new AW.UI.Button;
obj.setControlText("Search");
obj.setControlTooltip("This is tooltip text");
document.write(obj);