public var myTip:ToolTip;
public function createBigTip(str:String, obj:UIComponent):void {
myTip = ToolTipManager.createToolTip(str,x,y);
myTip.setStyle("backgroundColor",0xFFCC00);
myTip.setStyle("fontSize",11);
myTip.width = 300;
myTip.height = 300;
}
public function destroyBigTip():void {
ToolTipManager.destroyToolTip(myTip);
}